Item Weight: 1.6 ounces Shipping Weight: 8 ounces (View shipping rates and policies) Item model number: PENTEK-BN-420-400 #1732 in Industrial & Scientific > Filtration > Water Purification > Under-Sink & Countertop Filtration #2820 in Home & Kitchen > Heating, Cooling & Air Quality > Air Conditioners & Accessories > Replacement Parts #5585 in Home & Kitchen > Heating, Cooling & Air Quality > Air Purifiers > Parts & Accessories