Horizon Series by Filbur

We are offering a Filter Cartridge 50SQft 10 3/4" x 7" with 2" Male Slip for Caldera Spa.This filter is a popular size and fits some Caldera tubs by Watkins it is a 50 Square Foot Filter Cartridge...

This Filter Cartridge fits Some New Cal Spa and Marquis Spas. It is 12 1/2" Tall x 5 3/16" Wide with 2" Mpt Threads which is a think thread that measures about 2 3/8" outside diameter. The MPT...

This Filter is a 30 Square Foot Filter Cartridge that Fits after some 1990 Hot Spring Hot Tubs by Watkins is 6" Outside Diameter x 10 1/2" in Length and has a 1 15/16" top and bottom hole.This fits...

This filter cartridge is 9" Tall x 6' Wide and features a 1 1/2" MPT screw in nipple which measures about 1 13/16" to the outside of the threads. This filter is found in LA and Advanced spas and more...

This filter is 8" tall x 4 1/4" Wide with a 1 15/16" Hole in the top and bottom. it is 5 SQ Ft. Diameter 4-1/4" Length 8" Top Style Open Top Physical Dimension 1-15/16" Bottom Style Open ...