Cartridge Coupler for Big Blue Housings

Cartridge Coupler for Big Blue Housings

The cartridge coupler is designed to combine two open ended filter cartridges to extend filter life.  These couplers are for the Big Blue 20" filter housings. These couplers are reusable and can be used with many different 4-1/2" X 20" filters brands, including Culligan, Pentek, Ametek, Bruner, US Filter and American Plumber filters.