28x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ventilation and ducting 53 x 17 x 31

53 x 17 x 31 cm (21 x 7 x 12 in) Dimensions

Many growers prefer CMH lighting because of the power per watt it can deliver as well as the remarkable PAR spectrum that most closely matches the deeply penetrative power of the sun

and other small instruments with you on the go

heavy duty casters

28x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ventilation and ducting 53 x 17 x 31Nordic Pure Custom MERV 7 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