The Bullfrog 10-1035 Compatible Pool and Spa Water Filter is a replacement pool filter cartridge that measures 7 3/4" x 5 3/4". Featuring a top handle and bottom 2" SAE threads, this compatible Bullfrog pool filter features 50 square feet of media filtration fabric to improve water quality and clarity. Replaces 8CH-950, PBF50-F2S, PBF35-M FC-0536