22x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs There is no plastic which

There is no plastic which makes them extremely durable

*Crown diameter ranging from 11-12

#4 perlite

Spider Mite Knockout can be used safely on fruits and vegetables up to 3 days before picking

22x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs There is no plastic whichNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.