Pentek 155305-43 Specifications Filter Media: Pleated cellulose Application: City water only Contaminant Reduction: Sediment (sand, dirt, silt, rust, and scale particles) Dimensions: 20" L x 4-1/2" D Rating: 20 micron Flow Rate: 1.2 psi at 10 gpm Temperature Rating: 40°F to 145°F Part Number: 155305-43 / 15530543 S1 Series Cartridges Overview High flow filtration (very little pressure drop) Pleated design maximizes dirt-holding capacity Designed for general water filtration purposes Recommended for chlorinated water supplies Compatible Part or Model Numbers American Plumber W20CLHD20, 155305-51 Ametek S1-20BB Bruner S1-20BB Culligan S1-20BB Flowmatic FMBB-10-5 Keystone GC20-20 Kleen Plus S1-20BB Plymouth Products S1-20BB USFilter / US Filter S1-20BB Waterite Excelpure PL20B20Item Weight7.7 poundsProduct Dimensions4.5 x 4.5 x 9.8 inchesItem model numberS1-BBSize4.5x9-7/8"ColorWhiteItem Package Quantity1Batteries Included?NoBatteries Required?No