18x27x1 MERV 13 AC Furnace Filters 6 Pack Growing Media The door is lined with

The door is lined with a soft neoprene layer that keeps the filter in place

food scraps

Fold these up and make a quick rosin bag

This kit adds six (6) more sites to your system and includes pots (inner and outer)

greenhouse

18x27x1 MERV 13 AC Furnace Filters 6 Pack Growing Media The door is lined withNordic 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