Most Popular Filter Cartridges

This part is a replacement filter for Dual Filter applications in 2002+ Master Spas and Down East Spas. This filter is found on the inside of a larger filter and uses the stalk system with a center stalk and a threaded cap. You can find these different...

This Item is an Eco Pur Filter for the Teleweir System on Master Spa Build tubs.. It is 5" Wide X 3 1/2" Tall on the cartridge and has a 1 1/2" SAE Threaded fitting that measure about 1 7/8" Edge to edge on the threads.. This filters works with some but...

This Filter Core and Standpipe with Valve is made specifically for Oval Shaped Filter Cartridge that is 6-1/4" Outside Diameter on the Widest Part of the Oval x 9-3/4" in Length. Please don't be silly like Charles and think this is a filter and...

This filter is 13 1/2" X 4 15/16" and has a female SAE Large Thick Thread that is 2" which would really measure about 2 1/4-2 3/8" ID. This filter is found in Dynasty Bahama Tubs and others. If you have the shorter version of this filter which is 9 1/4"...

This filter fits Jacuzzi Premium Hot Tubs J-300, J-400 Series. It is 15 1/2" Tall and 6 5/8" Around and Features a 2" SAE which is a Thick Thread and measures a hair less than 2" Inside diameter and measures 2 3/8" to the outside of the threads. There...

This part is a 100 Square Foot Filter Cartridge that is 17 13/16" Tall x 6-9/16" Wide with a 2 3/8" Hole on Top and Bottom it can be found in some H2O or Four Winds Swim Spas and many other brands as well. Application    H2O Spas,...

This filter Fits Some AquaTerra & Freeflow Spas, it is a 40 Square Foot Filter Cartridge that is 5-3/8" Outside Diameter x 9-1/2" in Length and features a 1 1/2" MTP Fine Threaded Male Fitting which measures about 1-3/4" Edge to Edge....

This Catalina Filter is a 40 Square Foot Filter Cartridge that is 6" Outside Diameter x 8 1/4" in Length. It has a 1 1/2" SAE Threaded Fitting which is a Thick Thread that measures about 2" outside diameter of the threads. SAE Threads are really thick...

This Filter is a 40 Square Foot Filter Cartridge that is 6" Outside Diameter x 8 1/4" in Length. It has a 1 1/2" SAE Threaded Fitting which is a Thick Thread that measures about 2" outside diameter of the threads. SAE Threads are really thick. This...

This parts is an Artesian, Resort Series, Filter, Cartridge,  6 sqft, 1-7/8" Hole, 2" male pipe thread , 6" Wide, 7" Tall.. This filter is found in the center of the filter housing usually between two larger filters and has a Gray top on it...

This Filter is a 40 Square Foot Filter Cartridge for a Dynasty Hot Tub that is 6" Outside Diameter x 8 1/4" in Length. It has a 1 1/2" SAE Threaded Fitting which is a Thick Thread that measures about 2" outside diameter of the threads. SAE Threads are...

We are offering a Cartridge Filter 9 1/4" Tall x 6" Wide 2"mpt 40sqft and fits newer Master Spa Legend and Twilight Series tubs as a replacement for the Microban filter previously used.  This cartridge is comparable to the Master Spa...