20x26x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack rockwool • Heavy-duty

• Heavy-duty

large dehumidifier or multiple HID lights

and scheduling

0 DE Non-Dimmable Open Lighting System

20x26x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack rockwool • Heavy-dutyNordic Pure Custom MERV 10 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