24x30x1 Pleated MERV 7 Air Filters 3 Pack grow media Specifically designed to help promote

Specifically designed to help promote lateral root development and even drying throughout

manganese sulfate

The ONA Carbon-Air unit is to be used exclusively with ONA gel

industrial grade construction and durability

24x30x1 Pleated MERV 7 Air Filters 3 Pack grow media Specifically designed to help promoteNordic 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