17_1/2x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack Growing Media it can be applied throughout

it can be applied throughout the growing season on most crops

With the Reflector Heat Shield

Mild Vegetative – 6 ml/gallon

and other burrowing pests

17_1/2x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack Growing Media it can be applied throughoutNordic 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.