Most Popular Filter Cartridges
Replace dirty or worn Top Brand hot tub filter cartridges to maintain clean, healthy spa water. Regular filter replacement is essential for water clarity and protecting your spa equipment. Our Top Brand filter cartridges match OEM specifications for proper fit and filtration performance. We offer competitive international shipping rates to buyers worldwide.
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35 sq ft Spa Filter Cartridge 9-1/4" x 4-15/16" | 2-1/8" Openings | C-4335 FC-2385 PRB-35-IN
HTPOFAmerica
MSRP: $48.99$38.99This 35 square foot replacement filter cartridge measures 9-1/4" in length with a 4-15/16" outside diameter. Both top and bottom feature open-style 2-1/8" openings for optimal water flow through your...MSRP: $48.99$38.99 -
30 sq ft Hot Spring Spa Filter Cartridge 6" x 10-1/2" | FC-3915 C-6430 PWK30 | 1 15/16" Openings
Horizon Series by Filbur
MSRP: $44.99$34.99Genuine replacement 30 square foot filter cartridge engineered for Hot Spring spas manufactured by Watkins after 1990. This premium filtration cartridge measures 6 inches in outside diameter and...MSRP: $44.99$34.99 -
25sqft Spa Filter Cartridge 13-5/16" x 4-15/16" (2) 2 1/8" Openings FC-2375 PRB-25-IN C-4326
Hot Tub Parts or America
MSRP: $48.99$37.99A universal 25 Square Foot replacement filter cartridge designed to fit approximately 70% of hot tubs and spas on the market. This cartridge measures 13-5/16" in length with a 4-15/16" outside...MSRP: $48.99$37.99 -
40 sq ft Spa Filter Cartridge 6" x 8 1/4" with 1-1/2" SAE Thread - Front Load Housing Compatible
HTPOFAmerica
MSRP: $55.83$44.99Premium 40 square foot replacement filter cartridge designed for front-loading spa filter housings. Measures 8 1/4" in length with a 6" outside diameter. Features a 1 1/2" SAE threaded fitting at the...MSRP: $55.83$44.99 -
50sqft Spa Filter Cartridge 13-5/16"x4-15/16" 2-1/8" Openings FC-2390 C-4950 PRB50-IN Universal Fit
HTPOFAmerica
MSRP: $53.40$41.99Universal 50 square foot replacement filter cartridge designed to fit approximately 70% of hot tubs and spas on the market. Measures 13-5/16" in length with a 4-15/16" outside diameter. Features...MSRP: $53.40$41.99 -
Microban Filter Cartridge for Somerset Teleweir Eco Pur - 6 5/8" x 5" - Down East, Clarity Spa Compatible
HTPOFAmerica
MSRP: $59.99$49.99Premium Microban-equipped replacement filter designed for Somerset Teleweir Eco Pur filtration systems. Precisely engineered at 6 5/8" in height and 5" in diameter, featuring 1 1/2" SAE Female...MSRP: $59.99$49.99 -
Dream Maker Spa Filter Cartridge 27 sqft Oval 9-3/4" x 6-1/4" 3" Round & 4 1/8" Oval Opening
HTPOFAmerica
MSRP: $49.99$44.99Designed exclusively for Dream Maker Hot Tub models, this 27 Square Foot Oval Filter Cartridge measures 9-3/4" in Length by 6-1/4" Outside Diameter at the Widest Point of the Oval. The top features...MSRP: $49.99$44.99 -
70sqft Cartridge Filter for Master Spa 1998-2000 | 8" x 9 1/4" with 2"MPT Threading
HTPOFAmerica
MSRP: $117.99$98.99Global offers this replacement cartridge filter designed for pre-2002 Master Spa models from 1998, 1999, and 2000 with 70 square feet of filtration area. This genuine replacement measures 8 inches in...MSRP: $117.99$98.99 -
32 Sq Ft Cartridge Filter 8"x7" 2"MPT - Master Spa Coleman Maax Down East Compatible
HTPOFAmerica
MSRP: $57.99$47.99Replacement Cartridge Filter - 32 Square Feet, 8" Height x 7" Diameter, 2" MPT ConnectionThis replacement cartridge filter measures 8 inches in height by 7 inches in diameter and provides 32 square...MSRP: $57.99$47.99 -
50sqft Spa Filter 14-7/8" x 5" Diameter, 2-1/8" Openings - Cal Spa Compatible
Horizon Series by Filbur
MSRP: $59.99$44.99This premium replacement spa filter measures 14-7/8" in length by 5" in diameter with 2-1/8" open holes at both ends. Engineered for Cal Spa models and additional brands, this filter stands taller...MSRP: $59.99$44.99Qty in Cart: 0Quantity:Price:MSRP: $59.99$44.99Subtotal: -
Master Spa Down East Filter Cartridge 7 1/4"Tx7"Wx4"Hole 2002-2003 | Global
HTPOFAmerica
MSRP: $44.99$39.99Genuine replacement Filter Cartridge designed for Master Spa Down East models from 2002-2003 with precise dimensions of 7 1/4" in height, 7" diameter, and 4" openings at both ends. This cartridge...MSRP: $44.99$39.99 -
Master Spa & Down East Filter Cartridge 7 3/8" x 8" Wide 4" Hole 2004+
HTPOFAmerica
MSRP: $58.99$47.99Replacement Filter Cartridge for Master Spa and Down East hot tubs manufactured 2004 and newer. This cartridge measures 7 3/8 inches in length by 8 inches in width. The top opening diameter is 4...MSRP: $58.99$47.99