20x22_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories Whether you are starting seedlings

Whether you are starting seedlings

Boasting a 50% increase in light output and using only 190 watts

miticide and fungicide that controls numerous diseases as well as insects and mites

IDEAL FOR THOSE PROCESSING SMALLER BATCHES OR WORK IN LIMITED SPACE

20x22_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories Whether you are starting seedlingsNordic 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