12x16x1 MERV 7 AC Furnace Filters 12 Pack commercial-lighting-fixture The TrolMaster Carbon-X system provides

The TrolMaster Carbon-X system provides critical monitoring of CO2 levels for up to 13 separate zones / rooms

but also seedling/small plant development NO DRAIN HOLES – These trays are watertight

1000W AND 1150W performance

For use on vegetables

12x16x1 MERV 7 AC Furnace Filters 12 Pack commercial-lighting-fixture The TrolMaster Carbon-X system providesNordic 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