SPA FILTERS: 45 SQFT HOT TUB CARTRIDGE FILTER, 10 1/8" X 5 1/4" Packages:Single Filter Simply supplement with 1 ppm

Simply supplement with 1 ppm of chlorine or bromine

and a 2 1/8" opening

This will not fit on a round spa/hot tub

heating elements

SPA FILTERS: 45 SQFT HOT TUB CARTRIDGE FILTER, 10 1/8" X 5 1/4" Packages:Single Filter Simply supplement with 1 ppm45 square foot cartridge filter for hot tubs. This filter fits most current QCA Spas models. It is a 45 sq. ft. filter with a 5 1 4" outside diameter, a 10 1 8" length, and a 2 1 8" opening. To maximize the life of your QCA Spas Dream Series filter cartridge: Clean the elements as instructed Do not use a stiff brush to scrub the media Maintain your spa water's chemistry Alternate two sets of cartridges when ready to clean Use a type of enzyme