21_1/2x23_5/16x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting With DeAblo

With DeAblo

MERV 8 furnace air conditioning filters are comparable to HVAC filters with the rating of MPR 1000

High quality quartz glass for consistent spectral output and PAR production

The #3 measures around 1/2 in and the Coarse is about 1/8 to 1/4 in

21_1/2x23_5/16x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting With DeAbloNordic Pure Custom MERV 8 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