25x29x1 MERV 13 AC Furnace Filters 6 Pack Grow Strong Optimal Conditions: 68-100°F with higher

Optimal Conditions: 68-100°F with higher relative humidity as temperatures rise

keeping your rhizosphere at an optimal temperature

you can be assured of a high-quality product at a great price

Apply once a week throughout the vegetative growth phase of the plant

Black Vinyl Tubing (ID) 1"

25x29x1 MERV 13 AC Furnace Filters 6 Pack Grow Strong Optimal Conditions: 68-100°F with higherNordic 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