11_1/2x11_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack lighting - Evacuate the area during

- Evacuate the area during treatment

a must in every grower's toolbox

penetrating light intensity along with industry-leading uniformity over a square 4’ x 4’ footprint

Very easy to hang

HI710030 is an green rubber boot that fits over selected portable meters including HI9814 pH/EC/TDS

11_1/2x11_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack lighting - Evacuate the area duringNordic 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