Pentair 170028 Air Bleed Tube Assembly Replacement Pool/Spa Cartridge and D.E. Filter Air bleed tube assembly replacement Fits Pentair Clean & Clear Plus pool and spa cartridge filter model CCP420 Also fits Pentair Quad pool and spa D.E. filter model Quad 80 Measures 29-1/8-inch length by 1-inch height by 1-inch width