$35.98 (as of 26/11/2018 04:06 PST details )
Features:
- Pack of 12 disposable UL Class II rated air filters designed for protection of furnace and central air units
- MERV 4 rating Removes household dust, pollen, and lint
- Continuous chipboard design guards against corner separation while the one sided metal media retainer adds to the filter strength
- Each filter maintains efficiency for up to 30 days
- Compatible with HVAC systems requiring filters sized 22 x 22 x 1