13x20x1 Exact MERV 13 AC Furnace Filters 12 Pack Reflective & Greenhouse Films Included reflector can be removed

Included reflector can be removed to use the tube vertically

Continuous measurements

Can be wired for 120 or 240V

Set it and forget it

A+B Hydro/Coco base feeds are explicitly designed for hydro/coco

13x20x1 Exact MERV 13 AC Furnace Filters 12 Pack Reflective & Greenhouse Films Included reflector can be removedNordic Pure MERV 13 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 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200