17_1/8x34_7/8x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Cleaning Products but due to their texture

but due to their texture

helping control humidity in smaller grow spaces

Aphids (Mult)

Aerates the root zone and air-prunes roots

17_1/8x34_7/8x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Cleaning Products but due to their textureNordic Pure Custom MERV 14 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