Techypro 2 Pack Shark Nv80 Nv70 &UV420 Part# Xff80 Vacuum Cleaners Replacement Foam & Felt Filter Washable Reusable Fits Shark NV70 NV80, UV440 & UV420 models Compatible for Shark vacuum cleaner100% Compatibility Guaranteen. Made of high-strength and environmental protection material New replenishment Foam & Felt Filter kit for Shark Vacuum Cleaner Item includes 4pcs, 2 Foam and 2 Felt Filter