12_3/4x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting-accessories soilless and hydroponic based growing

soilless and hydroponic based growing mediums and can be used in conjunction with any premium quality nutrient and/or fertilizer

The Max-Fan™is an inline mixed flow fan capable of medium to high static pressure

PowerVEG 660 appears white when not lit

500 gallons of feed when paired with Perfecta VEG and 3

The double-sided lock can be activated with either your right or left hand

12_3/4x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting-accessories soilless and hydroponic based growingNordic Pure Custom MERV 13 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