Tier1 15-1/2 in. x 6-5/8 in., 240 sq. ft. Pool & Spa Filter Cartridge for Jacuzzi J300 6541-383, J300 Series Hot Tubs (4-Pack) TIER1_PAS_1342_4_PACK - The Home Depot
Jacuzzi® PROCLARITY® 40 sq. ft. Primary Filter, 6473-157J - The Spa Supply Store by Jacuzzi® Hot Tubs of the Triangle