16_1/4x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack HVAC & HOME VENTILATION * Heavy-duty spill tray

* Heavy-duty spill tray

Screw on the threaded carb cap to maintain proper airflow and prevent mess

Heavy-Duty Copper Coil

healthier plants with bountiful yields

16_1/4x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack HVAC & HOME VENTILATION * Heavy-duty spill trayNordic Pure Custom MERV 12 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition