20_1/2x25_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack eligible-for-discount mix 1-4 pints/acre with 100-400

mix 1-4 pints/acre with 100-400 gallons/acre

Twice the Power and Efficiency of Most Other Reflectors Increase the Growing Area under each lamp by up to 75%

Speed Control Range: 25~100%

*Use with any other Biobizz products or Try-Packs to maximize crops and minimize costs

20_1/2x25_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack eligible-for-discount mix 1-4 pints/acre with 100-400Nordic 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