Hayward DEX4820BTC Filter Head with Clamp System Replacement for Select Hayward Filters Filter head with clamp system replacement Fits hayward pro grid vertical d e filter models de2420, de3620, de4820, de6020, de7220 Also fits hayward swim clear cartridge filter c2020, c3020, c4020, c5020 Also fits Hayward Skim-Master models SP1070, SP1070 NSF Includes clamp system; weight 19-pound