18x18x1 Pleated MERV 13 Air Filters 24 Pack AIR FILTER BOXES Includes optional lock and keys

Includes optional lock and keys for security use

1-year warranty on probe

leaving the bottom section unused

delivering superior drainage and creating a healthier root environment

the tubing features UV inhibitors for longer life in sunny environments

18x18x1 Pleated MERV 13 Air Filters 24 Pack AIR FILTER BOXES Includes optional lock and keysNordic 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