Most Popular Filter Cartridges

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 filter is this most popular size and fits 70% of all tubs it is a 50 Square Foot Filter Cartridge that is 4-15/16" Outside Diameter x 13-5/16" in Length. It has a hole in the top and the bottom that are 2 1/8". Don't just order this filter though be...

This Item is a Microban Filter for Somerset Teleweir Eco Pur System and others.. It is 5" Wide X 6 5/8" Tall and has a 1 1/2" SAE Female Threaded fitting that measure about 1 7/8" Edge to edge on the threads on both ends of the filter.. This filters...

This filter is made specifically for Dream Maker Hot Tubs only and it is a 27 Square Foot Oval Shaped Filter Cartridge that is 6-1/4" Outside Diameter on the Widest Part of the Oval x 9-3/4" in Length. It has an Oval Hole in the top that measures about 4...

We are offering a Pre--2002 Master Spa Cartridge Filter 8" x 9 1/4" Wide 2"mpt 70sqft Master Spa Most 1998,1999, 2000. This filter is 8" long x 9 1/4 " Wide and has   2"MPT which measures about 2 1/4" Across . The overall length of this housing...

We are offering a Cartridge Filter 8" x 7" Wide 2"mpt 32sqft Master Spa Down East Coleman Maax. This filter is 8" long x7 " Wide and it has a hole in one end that is 5" with lid and a nipple on the other end that is 2". The overall length of this housing...

This Filter is 14-7/8" tall x 5" wide it has 2 1/8" holes on the top and bottom. This filter does fit some Cal Spas but looks very silmilar to a standard sized filter which is 13 5/16" tall but this filter is slightly taller at 14 7/8". Please...

This part is a Filter Cartridge,  7 1/4"Tall x 7" Across 4" Hole for a Master Spa Down East 2002-2003. This filter is 7 1/4" long x 7" Wide and it has a hole in each end that is 4". The overall length of this housing is about 7". The top and bottom...

This part is a Filter Cartridge,  7 3/8" Long x 8" Across 4" Hole Master Spa & Down East 2004+. This filter is 7 3/8" long x 8" Wide and it has a top hole that is 4". The overall length of this housing is about 7 3/8". The top hole size is about...

This parts is an Artesian, Resort Series, Filter, Cartridge, 50sqft, 2" male pipe thread, 6-3/4" Wide, 8" Tall.. Note The small filter found in the center between these filters can be found here.. Artesian, Resort Series, Filter, Cartridge, 6 sqft,...

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.

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"...