17_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack grow media COMPATIBLE – These domes have

COMPATIBLE – These domes have standard dimensions and are compatible with all standard 10" x 20" trays and heat mats

Roots Organics Trinity is a blend of select organic compounds designed for maximum effect as a supplement for plant and rhizosphere nutrient uptake and growth

Educational & Medical Facilities

this LED shop light is easy to hang and install in head houses

17_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack grow media COMPATIBLE – These domes haveNordic Pure Custom MERV 12 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