VF3700 Cartridge Filter Wet Application Foam Filter simply snaps on or off the shop vacuum for easy cleaning and to quickly switch filter options. Compatible with for ridgid shop vac filter and filter sizes. Change every 1-6months,replacing your filters regularly will improve the cleaning performance and suction of your vacuum cleaner. The replacement VF3700 Cartridge Filter can be washed and reused. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:plastic Package Contents: 2 x VF3700 Foam Filter 1 x clean brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.