21x23_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Air Filter Coverage area & Hanging heigh

Coverage area & Hanging heigh

The kit includes three optional 120mm fan guards and hardware to secure three 120mm fans

Response curve is almost constant (versus Gaussian for digital meters) which yields a much higher accuracy independent of wavelength being measured- great for measuring LED light correctly

The all new LITE LINE from Gorilla Grow Tent has been engineered for growers that want a Gorilla Growing Experience

THERMAL CONTROLLER

21x23_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Air Filter Coverage area & Hanging heighNordic 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