11_1/2x11_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Tents / Indoor Greenhouses these pumps are also extremely

these pumps are also extremely simple in operation and require minimal maintenance

Set hot start delay from 0 minutes to 15 minutes or stays off

Perlite -horticultural grade

170°C magnets

40” / 1/25 / 1mm

11_1/2x11_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Tents / Indoor Greenhouses these pumps are also extremelyNordic Pure Custom MERV 14 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