Bissell Zing 4122 Bagged Canister Vacuum Replacement Pre Filter Part #2038426 - Compatible with Bissell Zing Model 4122, Perfect for Home Cleaning & Pet Hair Removal

The filter is a necessary part of the vacuum cleaner, thus far it is working. It picks up lint and whatever else it picks up. I replace the old filter if it is worn out and replace with a new filter. No problem buying it from Amazon instead of going to a dept store.