18x18x1 Pleated MERV 7 Air Filters 6 Pack Pots and Containers Suitable for use with many

Suitable for use with many different mushroom spores

The galvanized steel body is finished with a zinc coating that aids in its resistance to corrosion and high temperatures

Super Nitro Bat Guano is fast acting and is so powerful it should be used carefully and sparingly

Over the last 60 years supporting and working with growers we know only one strength doesn't cut it

18x18x1 Pleated MERV 7 Air Filters 6 Pack Pots and Containers Suitable for use with manyNordic Pure MERV 7 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 and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters