1. Measure the outside diameter of the cartridge (in inches, +/- 1/32”).
2. Measure the cartridge length (in inches, +/- 1/16”) including end caps but excluding any handles or other extensions. Unicel recommends measuring through the center (if possible) rather than along the outside edge.
3. Identify the cartridge outside edge end cap configuration using the chart on the opposing page. If the top and/or bottom is “open,” measure the inside diameter (in inches, +/- 1/32”) of the top and/or bottom.
4. Record the OEM name and model of the filter the cartridge came out of (if possible).
5. Count the number of pleats (+/- 2) and note whether there is a center core or not.

The information gathered in 1-5 above can then be used to identify a proper replacement. Cartridges are grouped into “series” based on the outer diameter (O.D.) of the cartridge. For example, the 2000 Series is comprised of cartridges between 2 and 2.99 inches in O.D.; the 9000 Series is comprised of cartridges with an O.D. of 9 inches or greater. Note that if the cartridge O.D. is either, for example, 4-15/16” or 6-15/16” it may be necessary to check the next series, the 5000 Series and 7000 Series, respectively.

2-7/8" 

9-3/4"

/ hose fitting
/ closed

41

4 sq.ft. fill filter

C-2699

2-7/8" 

9-3/4"

1-1/16" / open
1-1/16" / open

41

4 sq. ft. Rainbow, Pac-Fab

C-2604

2-7/8"

9-3/4"

1-1/16" / open
1-1/16" / open

62

6 sq. ft. American, Pac-Fab, Premier, Rainbow, Swimquip, SwimRite

C-2606

2-7/8" 

9-3/4"

1-1/16" / open
1-1/16" / open

84

8 sq. ft. American, Rainbow

C-2308

2-7/8"  

14-11/16"

1-1/16" / open
1-1/16" / open

41

6 sq. ft. Wet Institute

C-2607

2-7/8"

14-11/16"

1-1/16" / open
1-1/16" / open

84

12 sq. ft. Rainbow

C-2912

2-7/8" 

17-1/16"

1-1/16" / open
1-1/16" / open

84

14.5 sq. ft. Rainbow-Hi Flow

C-2302

2-7/8"

17-1/16"

2-1/8" / open
2-1/8" / open

150

8.5 sq. ft. Rainbow-Chloro

C-2303

2-7/8"

19-1/2"

1-1/16" / open
1-1/16" / open

41

8 sq. ft. Rainbow 19

C-2608

2-7/8"

19-1/2"

1-1/16" / open
1-1/16" / open

62

12 sq. ft. Rainbow 19X

C-2612

2-7/8" 

29-1/4"

1-1/16" / open
1-1/16" / open

41

12 sq. ft. Rainbow 29

C-2613

2-7/8 

" 29-1/4"

1-1/16" / open
1-1/16" / open

62

18 sq. ft. Rainbow 29X

C-2618

4-1/4"

3-3/4"

 2-1/16" / open
2-1/16" / open

52

2.5 sq.ft. Aqua Leisure (size "1")

C-4313

4-1/4"

4"

2-1/16" / open
2-1/16" / open

216

10 sq. ft. skim filter

C-4310

4-1/4"

7-1/8"

/ semi-circular handle
2" / open

163

15 sq.ft. Icon Spas

C-4315

4-1/4"

8"

/ closed
1-15/16" / open

51

SLM, Buddy-L, Waterworks, Empire, Pelican Recreational, Haughs D-8 skim filter, H20 Recreation

C-4304

Note: Can also be replaced with C-4607 w/ top “plug” (not furnished).

4-1/4"

8"

1-3/4" / open
1-3/4" / open

51

5 sq. ft. General Foam Plastics

C-4306

4-1/4"

8"

1-15/16"/ open
1-15/16" / open

51

Coleco F-120/DR-7, Krystal Klear Models 108R/12, Intex, Sand-n-Sun, Wet Set, Easy Set

C-4607

4-1/4"

10-7/8"

1-15/16" / open
1-15/16" / open

65

9 sq. ft. Haugh's, Jacuzzi Leisure C-11

C-4603

4-1/4"

12"

/ semi-circular handle
2" / open

167

25 sq.ft. Icon Spas

C-4329

4-1/4"

23-3/4"

/ semi-circular handle
2" / open

190

60 sq.ft. Icon Spas

C-4360

4-1/4"

23-3/4"

/ semi-circular handle
2-5/16" / open w/ molded o-ring

202

50 sq.ft. Icon Spas

C-4351

Note: Product has 1 blue and 1 orange end cap.

4-1/2"

9-3/4"

1-1/16" / open
1-1/16" / open

Sta-Rite TX-15

C-4610

4-5/8"

4-5/8"

/ molded cone handle
/ 1-1/2” male thread/MPT

199

13 sq. ft. top load

4CH-19

4-5/8"

4-5/8"

/ molded cone handle
1-9/10" / open

177

12 sq.ft. Pleatco skim filter, Softsider Spas, Comfort Line Spas

C-4302

4-5/8"

6-3/4"

/ molded cone handle
/ 1-1/2” male thread/MPT

204

20 sq. ft. top load

4CH-20

4-5/8"

6-3/4"

/ molded cone handle
1-9/10" / open

150

15 sq.ft. Pleatco skim filter, Softsider Spas, Vita Spas

C-4303

4-5/8"

8"

 / molded cone handle
/ 1-1/2” male thread/MPT

158

19 sq. ft. top load

4CH-21

4-5/8"

9-3/4"

/ molded cone handle
/ 1-1/2” male thread/MPT

173

25 sq. ft. top load

4CH-24

4-5/8"

9-3/4"

/ molded cone handle
1-7/8" / open w/ slots

138

20 sq. ft. Aqua Spa

C-4402

4-5/8"

9-3/4"

/ molded cone handle
1-9/10" / open

173

25 sq.ft. Pleatco skim filter, Spa Manufacturers, Gatsby Spas

C-4324

4-5/8"

11-7/8"

/ molded cone handle
/ 1-1/2” male thread/MPT

158

30 sq. ft. top load

4CH-30

4-5/8"

11-7/8"

2-1/16" / open
2-1/16" / open

110

20 sq. ft. Hayward CX200-RE, American Commander II (in-line)

C-4320

4-5/8"

11-7/8"

2-1/16" / open
2-1/16" / open

138

25 sq. ft. Hayward CX225-RE, American Commander II (in-line)

C-4325

4-5/8"

11-7/8"

2-1/16" / open
2-1/16" / open

111

20 sq. ft. American Commmander II (in-line)

C-4620

4-5/8"

12"

/ semi-circular handle
/ 1-1/4" SAE thread

139

25 sq. ft. top load - Dimension One Spas

4CH-950

4-5/8"

14-3/4"

/ molded cone handle
/ 1-1/2” male thread/MPT

225

50 sq. ft. top load

4CH-50

4-5/8"

15"

/ semi-circular handle
/ 1-1/4" SAE thread

176

40 sq. ft. top load - Dimension One Spas

4CH-940

4-5/8"

16"

/ molded cone handle
/ 1-1/2” male thread/MPT

145

35 sq. ft. top load

4CH-35

4-5/8"

16-3/4"

/ castle
2-1/16" / open

158

40 sq. ft. Sundance Spas

C-4440

4-5/8"

19-5/8"

/ molded cone handle
/ 1-1/2” male thread/MPT

217

65 sq. ft. top load

4CH-65

4-5/8"

23-3/4"

2-1/16" / open
2-1/16" / open

138

50 sq. ft. Grecian Spa

C-4350

4-3/4"

16"

1-1/8" / open
2-3/8" / open

57

Coleco F-750, F-775, F-850, F-875, DR-16

C-4616

4-15/16"

4-5/8"

2-1/8" / open
2-1/8" / open

158

Rainbow DSF-35, Waterway Plastics

C-4401

Note: 2 cartridges per set with stick handle.

4-15/16"

5-1/2"

/ closed
1-9/10" / open

177

16 sq.ft. Splash Tub

C-4316

4-15/16"

6-5/8"

/ closed
/ 1-1/2” male thread/MPT

212

25 sq.ft. Freeflow Spas TLX, RLX

4CH-23

4-15/16"

6-5/8"

2-1/8" / open
/ 1-1/2” male thread/MPT

212

25 sq.ft. Freeflow Spas CLX

4CH-22

4-15/16"

6-5/8"

2-1/8" / open
2-1/8" / open

158

Rainbow DSF-50, Waterway Plastics

C-4405

Note: 2 cartridges per set with stick handle.

4-15/16"

9-1/4"

2-1/8" / open
2-1/8" / open

219

35 sq. ft. Rainbow, Waterway Plastics, Custom Molded Products

C-4335

4-15/16"

9-13/16"

/ closed
2-1/8" / open

148

25 sq. ft. Santanna

C-4328

4-15/16"

9-13/16"

2-1/8" / open
2-1/8" / open

148

25 sq. ft. Santanna

C-4428

4-15/16"

10-3/8"

/ closed
2-1/8" / open

158

30 sq. ft. skim filter, Lifestyle

C-4431

4-15/16"

10-3/8"

2-1/8" / open
2-1/8" / open

158

30 sq. ft. Nemco

C-4429

4-15/16"

11-1/4"

2-1/8" / open
2-1/8" / open

216

40 sq. ft. Waterway Plastics

C-4339

4-15/16"

11-5/8"

2-1/8" / open
2-1/8" / open

197

40 sq. ft. Dimension One Spas

C-4340

4-15/16"

11-7/8"

2-1/8" / open
2-1/8" / open

154

32 sq. ft. Martec, Sonfarrel, Advantage Mfg.

C-4332

4-15/16"

12-1/4"

2-1/8" / open
2-1/8" / open

212

45 sq. ft. spa filter

C-4311

4-15/16"

13-5/16"

/ closed w/ raised ring
2-1/8" / open

106

Rainbow Leaf Canister

C-4321

4-15/16"

13-5/16"

2-1/8" / open
2-1/8" / open

106

25 sq. ft. Rainbow, Waterway Plastics, Custom Molded Products

C-4326

4-15/16"

13-5/16"

2-1/8" / open
2-1/8" / open

106

25 sq. ft. Rainbow, Waterway Plastics, Custom Molded Products

C-4625

4-15/16"

13-5/16"

 2-1/8" / open
2-1/8" / open

158

37 sq. ft. Rainbow, Waterway Plastics, Morgan Spas, Leisure Bay Spas, Custom Molded Products

C-4637

Note: 37 sq.ft. C-4637 is an upgrade to 25 sq.ft. C-4326 and C-4625 cartridges.

4-15/16"

13-5/16"

2-1/8" / open
2-1/8" / open

212

50 sq. ft. Rainbow, Waterway Plastics, Custom Molded Products

C-4950

Note: 50 sq.ft. C-4950 is an upgrade to 25 sq.ft. C-4326 and C-4625 cartridges.

4-15/16"

14-9/16"

2-1/8" / open
2-1/8" / open

94

25 sq. ft. Sonfarrel

C-4308

4-15/16"

14-7/8"

/ closed
2-1/8" / open

173

45 sq. ft. Santanna

C-4345

4-15/16"

14-7/8"

2-1/8" / open
2-1/8" / open

106

28 sq. ft. Martec, Sonfarrel

C-4301

4-15/16"

14-7/8"

2-1/8" / open
2-1/8" / open

193

50 sq. ft. Cal Spas, Martec, Sonfarrel, Advantage Mfg.

C-4305

4-15/16"

17-3/4"

/ closed
2-1/8" / open

143

45 sq. ft. Santanna

C-4346

4-15/16"

17-3/4"

2-1/8" / open
2-1/8" / open

143

45 sq. ft. Santanna

C-4449

4-15/16"

20-1/8"

2-1/8" / open
2-1/8" / open

210

75 sq. ft. Rainbow RTL-75, Custom Molded Products

C-4975

4-15/16"

23-5/8"

2-1/8" / open
2-1/8" / open

178

75 sq. ft. Waterway Plastics

C-4970

4-15/16"

23-5/8"

2-1/8" / open
2-1/8" / open

222

 95 sq. ft. Waterway Plastics, Cal Spas

C-4995

4-15/16"

26-11/16"

2-1/8" / open
2-1/8" / open

210

100 sq. ft. Rainbow RTL-100

C-4999

5"

8"

/ closed
2-1/4" / open

56

 8 sq. ft. Pelican Rec, H20 Recreation

C-5301

5"

13-5/16"

2-3/8" / open
2-3/8" / open

103

 25 sq. ft. Jacuzzi CFR-25 (in-line)

C-5625

5-1/8"

10-1/4"

1-15/16"/ open
1-15/16" / open

157

30 sq. ft. Hot Springs Spas/Watkins Mfg. (Model FH/IH (220 volt))

C-5431

5-3/16"

9"

1-5/8" / open
1-5/8" / open

154

 25 sq. ft. Premier

C-5426

5-3/16"

10-3/4"

/ bar handle
/ 2” male thread/MPT

204

 40 sq. ft. Del Sol Spas

5CH-402

Note: OEM original is 11" OAL and 5-1/2" OD.

5-3/16"

11-7/8"

/ closed w/ string handle
1-15/16" / open

106

 22 sq. ft. Advanced Spa (original)

C-5621

Note: The original had a white knob handle.

5-3/16"

11-7/8"

1-1/16" / open
1-5/8" / open

115

 25 sq. ft. Marquis Spas (old)

C-5626

5-3/16"

11-15/16"

/ closed
1-5/8" / open

158

 34 sq. ft. Marquis Spas (old style)

C-5423

Note: The original was 25 sq. ft. (115 pleats). This replacement has been upgraded to 35 sq. ft.

5-3/16"

12-1/2"

/ bar handle
/ 2” male thread/MPT

197

 50 sq.ft. Marquis Spas (new style)

5CH-502

Note: Unicel part number was formerly C-5303.

5-3/16"

14-1/8"

/ closed
1-5/8" / open

180

50 sq. ft. Marquis Spas (old style)

C-5346

5-3/16"

14-3/4"

1-1/16" / open
1-5/8" / open

100

27 sq. ft. Marlin Spa, Romanesque, Waterworks

C-5627

5-3/16"

19-5/8"

/ closed
1-5/8" / open

158

58 sq. ft. Pacific Marquis (new)

C-5434

Note: The original was 40 sq. ft. (109 pleats). This replacement has been upgraded to 60 sq. ft.

5-3/16"

19-5/8"

1-1/16" / open
1-5/8" / open

109

40 sq. ft. Pacific Marquis (old)

C-5637

5-3/16"

23-1/4"

1-5/8" / open
1-5/8" / open

172

75 sq. ft. Premier, Maxi-Sweep

C-5371

5-5/16"

10"

2-1/8" / open
/ 1-1/2” male thread/MPT

225

 45 sq.ft. Freeflow Spas Legend

5CH-45

5-5/16"

10-1/8"

2-1/8" / open
2-1/8" / open

230

45 sq. ft. Rec Warehouse S2/G2 Spa, Rainbow, Waterway

C-5345

5-5/16"

13-9/16"

2" / open
2" / open

84

 23 sq. ft. Pac-Fab

C-5623

5-5/16"

14-13/16"

2-1/8" / open
2-1/8" / open

223

 65 sq. ft. Rec Warehouse S2/G2 Spa, Rainbow, Waterway

C-5374

5-5/16"

17-13/16"

2-1/8" / open
2-1/8" / open

223

 80 sq. ft. Rec Warehouse S2/G2 Spa, Rainbow, Waterway

C-5397

5-5/16"

21-5/16"

2-1/8" / open
2-1/8" / open

222

100 sq.ft. Waterway, Coast Spas

C-5396

5-5/16"

30-1/8"

2-1/8" / open
2-1/8" / open

222

35 sq.ft. Waterway, Coast Spas

C-5351

5-1/2"

11-7/8"

1-15/16" / open w/ 12 concentric holes
2-7/8" / open

133

 25 sq. ft. ozone cartridge (Dimension One Spas)

C-5402

5-1/2"

17"

1-15/16" / open w/ 12 concentric holes
2-7/8" / open

133

 40 sq. ft. ozone cartridge (Dimension One Spas)

C-5404

5-5/8"

8"

/ semi-circular handle
/ 1-1/2” male thread/MPT

203

 35 sq. ft. Elite Spas by Maax

5CH-35

5-11/16"

10-3/8"

/ closed w/ string loop
2-1/8" / open

100

 25 sq. ft. Jacuzzi Whirlpool Bath (front load)

C-5601

5-11/16"

10-3/8"

 / closed w/ string loop
2-1/8" / open

224

 50 sq. ft. Jacuzzi Whirlpool Bath (front load)

C-5300

5-3/4"

10"

1-7/8" / open
1-7/8" / open

70

15 sq. ft. Intex "B" filter

C-5315

5-3/4"

11-7/8"

2-1/8" / open
2-1/8" / open

98

 25 sq. ft. Jacuzzi Whirlpool Bath

C-5624

5-3/4"

11-7/8"

2-1/8" / open
2-1/8" / open

196

 50 sq. ft. Teledyne Spa Pak

C-5302

5-3/4"

12"

1-7/8" / open
1-7/8" / open

115

30 sq. ft. Intex 58621, Krystal Klear Models 520/530, Sand-n-Sun, Wet Set, East Set  

 C-5330

5-7/8"

12-3/4"

/ semi-circular handle
/ male slip fitting w/ molded o-ring

161

 50 sq. ft. Seasonmaster (Model 121 before 1994)

C-5350

/ bar handle
/2" male thread/MPT

6"

5-1/2"

/ semi-circular handle
/1-1/2” male thread/MPT

205

 25 sq. ft. top load

6CH-25

6"

7"

/ semi-circular handle
/ 1-1/2” male thread/MPT

158

 25 sq. ft. top load

6CH-26

6"

8-1/4"

/ semi-circular handle
/ 1-1/2" SAE thread

225

 45 sq. ft. top load

6CH-940

6"

8-1/4"

/ semi-circular handle
/ 1-3/4" male slip fitting

225

 45 sq.ft. stacked top load (upper) Waterway, Custom Molded Products

6CH-941

Note: Must be used with P/N 6CH-942.

6"

8-1/4"

1-3/4" / open
/ 1-1/2" SAE thread

225

 45 sq.ft. stacked top load (lower) Waterway, Custom Molded Products

6CH-942

Note: Must be used with P/N 6CH-941.

6"

9"

1-15/16" / open
1-15/16" / open

158

 33 sq. ft. Hot Springs Spas/Watkins Mfg.

C-6433

6"

9-1/8"

/ semi-circular handle
/ 1-1/2” male thread/MPT

225

 47 sq. ft. top load

6CH-47

6"

9-7/8"

/ semi-circular handle
/ 1-1/2” male thread/MPT

156

35 sq. ft. top load

6CH-35

6"

10-1/2"

1-15/16" / open
1-15/16" / open

124

 30 sq. ft. Hot Springs Spas/Watkins Mfg.

C-6430

Note: Models dated after 1990.

6"

12-3/8"

/ semi-circular handle
/ 1-1/2” male thread/MPT

158

 45 sq. ft. top load

6CH-45

6"

13-7/16"

/ semi-circular handle
/ 1-1/2” male thread/MPT

158

 50 sq. ft. top load

6CH-50

6"

13-7/16"

/ molded cone handle
1-9/10" / open

161

 50 sq. ft. Pleatco skim filter, Hercules

C-6450

6"

14-3/4"

/ semi-circular handle
1-7/8" / open

215

 75 sq. ft. Advanced Spa

C-6475

6"

16-1/8"

/ semi-circular handle
1-7/8" / open w/ slots

158

 60 sq. ft. Pageant Spa

C-6602

6"

16-1/4"

/ semi-circular handle
/ 1-1/2” male thread/MPT

158

 60 sq. ft. top load

6CH-60

6"

19-5/8"

/ semi-circular handle
1-7/8" / open w/ slots

107

50 sq. ft. Four Seasons

C-6605

6-3/8"

11-7/8"

3" / open
3" / open

207

 45 sq. ft. Hot Springs Spas/Watkins Mfg.

C-6600

Note: The original was 25 sq. ft. (116 pleats). The replacement has been upgraded to 45 sq. ft.

6-1/2"

17"

3" / open
3" / open

62

 Coleco DR-17

C-6617

6-3/4"

8"

/ semi-circular handle
/ 2” male thread/MPT

209

 50 sq. ft. Artesian Spas

6CH-502

6-3/4"

15-1/2"

/ semi-circular handle
/ 2" SAE thread

113

 52 sq.ft. Jacuzzi Premium

6CH-960

6-7/8"

11-7/8"

3-1/2" / open
3-1/2" / open

89

 25 sq. ft. Jacuzzi CF-25

C-6625

Note: This product has no center core.

6-7/8"

13-3/4"

2" / open
2" / open

123

 Fountain Valley Spa

C-6445

6-7/8"

14-7/8"

3-1/2" / open
3-1/2" / open

89

 30 sq. ft. Jacuzzi Whirlpool Bath

C-6300

Note: This product has no center core.

6-15/16"

19-3/8"

3-1/2" / open
3-1/2" / open

88

 40 sq. ft. Jacuzzi CF-40

C-6640

Note: This product has no center core.

6-3/4"

15-1/2"

/ open w/slots
/ 2" SAE thread

131

 60 sq.ft. Jacuzzi Premium

6-15/16"

22-3/8"

/ closed w/ string
handle
2-1/16" / open

113

 60 sq. ft. Doughboy

C-6659

6-15/16"

29-3/8"

3-1/2" / open
3-1/2" / open

88

 60 sq. ft. Jacuzzi CF-60

C-6660

Note: This product has no center core.

7"

5"

/ injection molded knob handle
/ injection molded cone adapter

113

 12.5 sq.ft. Baker-Hydro HM-12.5

C-7603

7"

6-1/2"

/ injection molded knob handle
1-1/2" / open

127

 20 sq. ft. Doughboy Skim-Line

C-7401

Note: Original is 7-1/2" OD.

7"

7-1/4"

4-1/8" / open
4-1/8" / open

265

 30 sq.ft. Micro Filter, 7-1/4" OAL

C-7330

7"

8"

/ semi-circular handle
/ 1-1/2” male thread/MPT

175

 32 sq. ft. top load

7CH-32

7"

8"

/ semi-circular handle
/ 2” male thread/MPT

175

 32 sq. ft. top load - Coleman Spas, Artesian Spas

7CH-322

7"

8"

/ semi-circular handle
1-9/10" / open

175

 32 sq. ft. Softsider Spas, Pleatco skim filter

C-7432

7"

9-3/4"

/ semi-circular handle
/ 1-1/2” male thread/MPT

178

 40 sq. ft. top load - Coleman Spas, Vita Spas

7CH-40

7"

9-3/4"

/ semi-circular handle
/ 2” male thread/MPT

178

 40 sq. ft. Coleman Spas

7CH-402

7"

9-3/4"

/ semi-circular handle
1-9/10" / open

178

 40 sq. ft. Pleatco skim filter, Softsider Spas

C-7439

7"

9-13/16"

/ injection molded knob handle
/ injection molded cone adapter

113

 25 sq. ft. Baker-Hydro HM-25

C-7604

7"

9-13/16"

/ semi-circular handle
2-1/16" / open

110

25 sq. ft. top load

C-7624

7"

9-13/16"

 3" / open
3" / open

113

 25 sq. ft. American, Swimquip, Premier

C-7425

7"

9-13/16"

3" / open w/ molded gasket
3" / open w/ molded gasket

111

 25 sq. ft. Hayward CX250-RE

C-7626

7"

10-1/2"

/ semi-circular handle
/ 2” male thread/MPT

178

 52 sq. ft. top load - Dimension One Spas

7CH-552

7"

10-1/2"

/ semi-circular handle
/ 1-1/2" SAE thread

216

 52 sq. ft. top load - Dimension One Spas

7CH-975

7"

10-3/4"

/ semi-circular handle
/ 2” male slip fitting

200

 50 sq. ft. Caldera Spas

C-7451

Note: C-7451 and C-7350 interchangeable in Caldera spa.

7"

10-3/4"

/ semi-circular handle
2-11/16" / open

200

 50 sq.ft. Caldera Spas (new style)

C-7350

Note: C-7350 and C-7451 interchangeable in Caldera spa.

7"

11-1/8"

2-15/16" / open
2-15/16" / open

99

 25 sq. ft. Purex CF-25

C-7610

7"

11-1/8"

2-15/16" / open
2-15/16" / open

155

 40 sq. ft. Purex CF-40

C-7440

7"

13-7/16"

3" / open
3" / open

119

 40 sq.ft. Jacuzzi CE

C-7304

7"

14"

2-15/16" / open
2-1/16" / open

99

 33 sq. ft. Purex CF-33/100

C-7633

7"

14-1/8"

3" / open
3" / open

167

 60 sq. ft. Clean & Clear Plus, American Quantum

C-7469

7"

14-3/4"

/ semi-circular handle
/ 1-1/2” male thread/MPT

144

 50 sq. ft. top load - Coleman Spas, Vita Spas

7CH-50

7"

14-3/4"

/ semi-circular handle
/ 2” male slip fitting

216

 75 sq. ft. Caldera Spa

C-7479

Note: C-7479 and C-7375 interchangeable in Caldera spa.

7"

14-3/4"

/ semi-circular handle
/ 2” male thread/MPT

144

 50 sq. ft. Coleman Spas

7CH-502

7"

14-3/4"

/ semi-circular handle
/ 2” male thread/MPT

216

 75 sq. ft. Dimension One Spas

7CH-752

7"

14-3/4"

/ injection molded knob
handle
/ injection molded cone adapter

144

 50 sq. ft. Baker-Hydro UM-50

C-7405

7"

14-3/4"

/ semi-circular handle
1-7/8" / open

143

 50 sq. ft. Goldkey

C-7400

Note: Product has 1 blue and 1 orange end cap.

7"

14-3/4"

/ semi-circular handle
1-9/10" / open

144

50 sq. ft. Pleatco skim filter, Vita Spas

C-7449

7"

14-3/4"

/ semi-circular handle
2-11/16" / open

216

75 sq.ft. Caldara Spa (new style)

C-7375

Note: C-7375 and C-7479 interchangeable in Caldera spa.

7"

17-7/16"

3" / open
3" / open

137

 60 sq.ft. Jacuzzi CE

C-7306

7"

17-5/8"

 / injection molded knob handle
1-1/2" / open

144

 60 sq. ft. Doughboy Skim-Line

C-7403

Note: Original is 7-1/2” OD.

7"

19"

2-1/2" / open w/ beveled edge
/ 1-1/2” male thread/MPT

182

 90 sq.ft. Sundance, 19" w/ 1-1/2" MPT

7CH-90

7"

19-3/8"

3" / open
3" / open

110

 50 sq. ft. Swimquip

C-7652

Note: 100 sq.ft. Swimquip is comprised of two C-7652 (OAL 38-3/4”).

7"

19-5/8"

 / injection molded knob handle
/ injection molded cone adapter

110

 50 sq. ft. Baker-Hydro HM-50

C-7605

7"

19-5/8"

2-15/16" / open
2-15/16" / open

110

 50 sq. ft. Purex CF-50/150

C-7651

7"

19-5/8"

2-15/16" / open
2-15/16" / open

129

 60 sq. ft. Purex CF-60

C-7460

7"

19-5/8"

2-15/16" / open
2-15/16" / open

172

 80 sq. ft. Purex CF-80

C-7480

7"

19-5/8"

3" / open
3" / open

110

 50 sq. ft. American, Premier

C-7650

7"

19-5/8"

3" / open
3" / open

161

 75 sq. ft. American, Premier

C-7453

7"

19-5/8"

3" / open w/ molded gasket
3" / open w/ molded gasket

108

50 sq. ft. Hayward CX500-RE

C-7656

7"

19-5/8"

3" / open w/ molded gasket
3" / open w/ molded gaske

161

 75 sq. ft. Hayward CX570-RE, Sta-Rite PRC 75

C-7477

7"

20"

3" / open
3" / open

170

 80 sq. ft. Clean & Clear Plus, Waterway Crystal Water

C-7470

7"

25-5/8"

2-15/16" / open
2-15/16" / open

172 4

105 sq. ft. Purex CF-105/315

C-7496

7"

26"

3" / open
3" / open

202

 125 sq. ft. Clean & Clear Plus, American Quantum

C-7498

7"

26-1/16"

3" / open
3" / open

168

105 sq. ft. Clean & Clear Plus, Waterway Crystal Water

C-7471

7"

27"

3" / open
3" / open

130

 85 sq.ft. Jandy CL340

C-7459

7"

29-1/8"

3" / open
3" / open

110

 75 sq. ft. Swimquip

C-7677

7"

29-3/8"

/ injection molded knob handle
/ injection molded cone adapter

108

 75 sq. ft. Baker-Hydro HM-75

C-7606

7"

29-3/8"

3" / open
3" / open

110

75 sq. ft. American, Premier

C-7675

7"

29-3/8"

3" / open
3" / open

142

 100 sq. ft. American, Premier

C-7499

7"

29-7/16"

3" / open w/ molded gasket
3" / open w/ molded gasket

108

 75 sq.ft. Hayward CX750-RE

C-7676

7"

32-1/16"

3" / open
3" / open

163

 125 sq. ft. Clean & Clear Plus, Waterway Crystal Water

C-7472

7"

39-3/8"

/ injection molded knob handle
/ injection molded cone adapter

110

 100 sq. ft. Baker-Hydro HM-100

C-7607

7-1/8"

10-1/2"

/ closed w/ Y stand-offs
2" / open w/ twist lock

215

 75 sq.ft. Dimension One Spas

C-7367

7-1/4"

14-9/16"

 2-15/16" / open w/ step
2-15/16" / open w/ step

189

 75 sq. ft. Advantage Mfg.

C-7301

7-1/2"

14"

2-15/16" / open
2-15/16" / open

174

 65 sq. ft. Martec/Sonfarrel

C-7416

Note: Use this cartridge with a C-7419 for a 165 sq. ft. cartridge.

7-1/2"

14-3/4"

/ castle
2-1/16" / open

164

 65 sq. ft. Sundance Spas

C-7465

Note: 2-1/16” bottom id for 1-1/2” system. Unicel part replaces both 7-1/2" and 8" OD Sundance cartridges.

7-1/2"

14-3/4"

/ castle
2-5/8" / open

164

 65 sq. ft. Sundance Spas

C-7466

Note: 2-5/8” bottom id for 2” system. Unicel part replaces both 7-1/2" and 8" OD Sundance cartridges.

7-1/2"

17-3/4"

/ castle
2-1/2" / open w/ beveled edge

154

75 sq.ft. Sundance Spas

C-7370

7-1/2"

20-13/16"

2-15/16" / open
2-15/16" / open

177

 100 sq. ft. Rec. Warehouse

C-7418

7-1/2"

21-7/8"

2-15/16" / open
2-15/16" / open

168

 100 sq. ft. Martec, Sonfarrel

C-7419

7-7/8"

11-1/8"

3-1/16" / open
3-1/16" / open

152

 50 GPM Pac-Fab

C-7678

Note: Use this cartridge with a C-7699 for a Mytilus MY-150.

7-7/8"

14"

3-1/16" / open
3-1/16" / open

146

 60 GPM Pac-Fab, 60 GPM Wet Institute

C-7660

7-7/8"

22-1/8"

3-1/16" / open
3-1/16" / open

122

 80 GPM Pac-Fab

C-7680

7-7/8"

22-1/8"

3-1/16" / open
3-1/16" / open

142

 100 GPM Pac-Fab, 105 GPM Wet Institute

C-7699

8"

6"

/ semi-circular handle
/ 2" SAE thread

250

 50 sq.ft. Bullfrog Spas

8CH-950

8"

9"

2-1/16" / open
/ 2” male slip fitting

193

 50 sq. ft. Coleman Spas

C-8450

8"

9-1/4"

/ semi-circular handle
/ 2” male thread/MPT

222

 60 sq. ft. top load - Master Spas

8CH-66

8"

11-5/8"

/ semi-circular handle
/ 2” male thread/MPT

177

 60 sq. ft. Continental Spa

8CH-60

8"

13"

2-1/16"/ open
/ 2” male slip fitting

197

 75 sq. ft. Coleman Spas

C-8475

8"

16-1/2"

 / semi-circular handle
3-5/8" / open w/ lip seal

259

 100 sq.ft. Caldera

C-8399

8-7/16"

14"

/ closed w/ 2" SAE thread
2-1/2" / open w/ beveled edge

174

 80 sq.ft. Sundance Spas - MicroClean

C-8380

Note: Replaces pleated element only.

8-7/16"

18"

/ closed w/ 3-step edge
2-1/2" / open w/ beveled edge

201

 125 sq.ft. Sundance Spas - Universal Length

C-8325

Note: Length recorded is measured to first step. Replacement for 18" to 18-1/2" overall length.

8-7/16"

18-1/8"

/ castle
2-1/2" / open w/ beveled edge

200

 120 sq. ft. Sundance Spas

C-8320

8-7/16"

19"

/ 1-1/2" male slip fitting
2-1/2" / open w/ beveled edge

199

 125 sq.ft. Sundance Spas

C-8326

8-1/2"

7-1/4"

1-9/10" / open
2-3/8" / open w/ slots

258

 50 sq. ft. Vita Spa

C-8350

8-1/2"

17-3/8"

4-1/16" / open w/ molded gasket
4-1/16" / open w/ molded gasket

153

 75 sq. ft. Hayward CX800-RE

C-8600

8-1/2"

23-5/16"

4-1/16" / open w/ molded gasket
4-1/16" / open w/ molded gasket

153

 100 sq. ft. Hayward CX1100-RE

C-8610

8-11/16"

9-3/4"

 4-3/16" / open
4-3/16" / open w/ 12 concentric slots

195

 37 sq. ft. Sta-Rite 35TX, 35TXR, 35GPM-TX

UHD-SR35

Note: Product has blue top end cap and orange bottom end cap.

8-11/16"

13-5/16"

 4-3/16" / open
4-3/16" / open w/ 12 concentric slots

195

52 sq. ft. Sta-Rite 50TX, 50GPM-TX, 50TXR, T-50TX, T-50TXR, PTM50

UHD-SR50

Note: Product has blue top end cap and orange bottom end cap.

8-11/16"

18-3/16"

4-3/16" / open
4-3/16" / open w/ 12 concentric slots

195

 72 sq. ft. Sta-Rite 70TX, 70GPM-TX, 70TXR, T-70TX, T-70TXR, PTM70

UHD-SR70

Note: Product has blue top end cap and orange bottom end cap.

8-11/16"

25-11/16"

4-3/16" / open
4-3/16" / open w/ 12 concentric slots

195

 102 sq. ft. Sta-Rite 100TX, 100GPM-TX, 100TXR, T-100TX, T-100TXR, PTM100

UHD-SR100

Note: Product has blue top end cap and orange bottom end cap.

8-11/16"

34-1/2"

4-3/16" / open
4-3/16" / open w/ 12 concentric slots

195

 135 sq. ft. Sta-Rite T-135TX (Posi-Flo)

UHD-SR135

Note: Product has blue top end cap and orange bottom end cap.

8-15/16"

17-3/8"

4" / open w/ molded gasket
4" / open w/ molded gasket

174

 90 sq. ft. Hayward CX900-RE, Sta-Rite PXC-95

C-8409

8-15/16"

28-3/16"

4" / open w/ molded gasket
4" / open w/ molded gasket

202

175 sq. ft. Hayward C-1750-RE, C-1900-RE, Sta-Rite PXC-150

C-8417

9-1/4"

14-3/16"

3" / open w/ molded gasket
3" / open w/ molded gasket

142

 85 sq. ft. Hayward CX850-RE

C-9485

9-1/4"

19-5/8"

3" / open w/ molded gasket
3" / open w/ molded gasket

152

120 sq. ft. Hayward CX1250-RE, Muskin FE129 P/N 58040

C-9499

9-15/16"

10"

5-13/16" / open
6-1/16" / open

194

 50 sq. ft. Jacuzzi CFR-50

C-9650

Note: This product has no center core.

9-15/16"

13-5/16"

5-13/16" / open
6-1/16" / open

202

 75 sq. ft. Waterway, Rec. Warehouse

C-9401

Note: This product has no center core.

9-15/16"

14-1/4"

5-13/16" / open
6-1/16" / open

193

75 sq. ft. Jacuzzi CFR-75

C-9475

Note: This product has no center core.

9-15/16"

19-5/16"

5-13/16" / open
6-1/16" / open

192

 100 sq. ft. Waterway, Rec. Warehouse

C-9402

Note: This product has no center core.

9-15/16"

19-7/8"

5-13/16" / open
6-1/16" / open

194

 100 sq. ft. Jacuzzi CFR-100

C-9699

Note: This product has no center core.

9-15/16"

24"

5-13/16" / open
6-1/16" / open

227

 150 sq. ft. Jacuzzi CFR-150

C-9478

9-15/16"

24"

5-13/16" / open
6-1/16" / open

303

 200 sq. ft. Jacuzzi CFR-200

C-9420

Note: This product has no center core.

9-15/16"

25-5/16"

5-13/16" / open
6-1/16" / open

218

 150 sq. ft. Waterway, Rec. Warehouse

C-9403

Note: This product has no center core.

10"

14-9/16"

/ bar handle
6" / open

200

 80 sq. ft. Jacuzzi Brothers

C-9480

10"

20-1/16"

/ bar handle
6" / open

218

 120 sq. ft. Jacuzzi Brothers

C-9481

10"

24-5/16"

/ bar handle
6" / open

240

 160 sq. ft. Jacuzzi Brothers

C-9482

10"

29-13/16"

/ bar handle
6" / open

244

200 sq. ft. Jacuzzi Brothers

C-9483

10-1/16"

8-9/16"

6" / open
6" / open

217

 50 sq. ft. Predator, Clean and Clear

C-9405

Note: This product has no center core and orange end caps.

10-1/16"

16-1/8"

6" / open
6" / open

171

 75 sq. ft. Predator, Clean and Clear

C-9407

Note: This product has no center core and orange end caps.

10-1/16"

23-5/8"

6" / open
6" / open

155

 100 sq. ft. Predator, Clean and Clear

C-9410

Note: This product has no center core and orange end caps.

10-1/16"

31-1/8"

6" / open
6" / open

175

 150 sq. ft. Predator, Clean and Clear

C-9415

Note: This product has no center core, 4 bands and orange end caps.

10-1/16"

31-1/8"

6" / open
6" / open

234

 200 sq. ft. Predator, Clean and Clear

C-9419

Note: This product has no center core, 5 bands and orange end caps.

Filter Clean
Concentrated formula deep cleans filter to remove dirt, oil, grease and scale.

Instant Cartridge Clean
Fast-acting spray & rinse formula with NEW color sray indicator for complete coverage.