ICEPURE ICP-PP10BB-05-2PACK Whole House Heavy Duty Sediment Water Filter 10" Compatible Codes Dupont WFHD13001B,Pentek DGD Series, RFC Series,Culligan RFC-BBSA,Whirlpool WHKF-GD25BB The filter is NSF42 certified by WQA Gold Seal OD: 4.5 ; ID:1.1 ; Length: 9.8 The filter has three Layers. Micron rate differs from outside to inside Removes chlorine, taste and odor; Does not remove beneficial minerals. Fits Universal Big Blue/ Jumbo whole house water filter system