18x36x1 MERV 7 AC Furnace Filters 6 Pack commercial-greenhouse-fixtures The Three Tray Propagation System

The Three Tray Propagation System is an automated 3-tray propagation system for propagating seeds for the 2012HL NFT system

Ready to bloom

and with a flip of a switch any rolling job is cut in half

Comes complete with two 15' cord sets

not harder—with the Zenport K118-HOE

18x36x1 MERV 7 AC Furnace Filters 6 Pack commercial-greenhouse-fixtures The Three Tray Propagation SystemNordic 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