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Spa Chemicals
- Fresh Water
  
  Spa Guard
  
  Spa Marvel
  
  Spa Frog
  
  While Supplies Last
  
  Brilliance for Spas
  
  Baqua Spa
  
  All Spa Chemicals
  
  Helpful Videos
  
  Helpful Articles
  
  The Ultimate Guide to Hot Spring Spas Freshwater Salt System Startup
  
  Learn More »
  
  Hot Tub Water Testing: How to Use Hot Tub Test Strips
  
  Learn More »
Hot Tub Filters
- American Whirlpool
  
  Hot Spring Spas - Highlife
  
  Hot Spring Spas - Limelight
  
  Master Spas
  
  Vita Spas
  
  All Spa Filters
  
  Helpful Videos
  
  Helpful Articles
  
  How to find a replacement hot tub filter
  
  Learn More »
  
  How to Clean Tri-X Filters in a dish washer
  
  Learn More »
Hot Tub Accessories
Berlin Gardens Poly Furniture
Hot Tubs and Swim Spas
- Hot Spring Spas
  
  Spas
  
  Highlife Spas
  
  Limelight Spas
  
  Hot Spot Spas
  
  American Whirlpool
  
  Spas
  
  American Whirlpool
  
  Vita Spa
  
  Swim Spas
  
  American Whirlpool
  
  Master Spas
  
  Spas
  
  Michael Phelps Signature
  
  Twilight
  
  Clarity Spas
  
  Swim Spas
  
  Michael Phelps Signature Swim Spas
  
  H2X
Billiard Tables

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Bottom End Cap

Filter Bottom End Cap

1 & 1/2 In MPT Threads

2 In Slip Fitting

Closed

MPT Threads

Open

SAE Threads

More

Filter Top End Cap

Closed

EcoPur Charge Slot

Handle

Open

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How to Measure a Hot Tub Filter

Filter Spa Filters by Dimensions

Search for your filter either using inches or metric measurements.

Inches

Millimeters

Search By Inches

Inner Diameter

Filter Inner Diameter USCS

1 7/8 Inches

2 & 1/8 Inches

2 1/4 Inches

Outer Diameter

Filter Outer Diameter

2 & 1/6 Inches

4 & 1/4 Inches

4 & 15/16 Inches

4 & 3/4 Inches

5 & 1/3 Inches

5 & 3/4 Inches

5 & 5/16 Inch

5 Inches

6 Inches

6.5 Inches

7 & 1/8 Inches

8 Inches

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Filter Length

Filter Length USCS

10 & 1/8 Inches

10 1/2 Inches

10 Inches

11 & 7/8 Inches

12 Inches

13 & 15/16

13 Inches

14 & 3/4 Inches

6 Inches

7 & 1/4 Inches

7 & 1/8 Inches

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7 & 3/8 Inches

7 & 5/8 Inches

8 & 1/2 Inches

8 & 1/8 Inches

8 Inches

9 & 1/4 Inches

9 Inches

More

Bottom End Cap

Filter Bottom End Cap

1 & 1/2 In MPT Threads

2 In Slip Fitting

Closed

MPT Threads

Open

SAE Threads

More

Filter Top End Cap

Closed

EcoPur Charge Slot

Handle

Open

Apply Filters

Active Filters:

Search By Millimeters

Inner Diameter

Filter inner Diameter Metric

48 mm

54 mm

57.1 Milimeters

Outer Diameter

Filter Outer Diameter metric

108 mm

120.6 mm

125.4 mm

127 Millimeters

135 mm

146 mm

152.4 Millimeters

165.1 Millimeters

180.9 mm

203 mm

52.3 Millimeters

More

Filter Length

Filter Length Metric

152 mm

181 mm

182.5 mm

184.1 Millimeters

194 mm

196.8 Millimeters

203.2 Millimeters

206.4 mm

215.9 mm

235 mm

254 mm

257 mm

266.7 Milimeters

299 mm

302 mm

305 mm

330 mm

354 mm

375 mm

More

Bottom End Cap

Filter Bottom End Cap

1 & 1/2 In MPT Threads

2 In Slip Fitting

Closed

MPT Threads

Open

SAE Threads

More

Filter Top End Cap

Closed

EcoPur Charge Slot

Handle

Open

Apply Filters

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