16_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays dual-level backlit LCD

dual-level backlit LCD

horizontal and vertical farming

high-quality plastic with a special UV-resistant composition

foliage plants and woody ornamentals)

Use IGSPF206PF as replacement prefilter

16_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays dual-level backlit LCDNordic 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