In-built drive and motor protection
Mount with ground post for feeding squirrels
Relative Humidity: 25-70%
If seedlings are not healthy out of the gate
14x18x1 MERV 14 AC Furnace Filters 6 Pack pest-and-disease-control In-built drive and motor protectionNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.