12x22x1 Exact MERV 7 AC Furnace Filters 6 Pack ventilation Specifically engineered for horticultural use

Specifically engineered for horticultural use with magnetic and electronic ballasts

Perlite is a unique volcanic mineral which expands from four to twenty times its original volume when it is heated

the 10 shelfs are made of aluminum alloy plate with good thermal conductivity and have 5 independent digital touch heating controls

this light is perfect for growers looking to cover larger areas using less

Will stack and nest with 180 degree turn

12x22x1 Exact MERV 7 AC Furnace Filters 6 Pack ventilation Specifically engineered for horticultural useNordic 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