Wall Mount Duct Shutter 4 - White Steel 4" Wall Mount Duct Shutter commercial-greenhouse-fixtures this stuff is highly concentrated

this stuff is highly concentrated

The rack unit comes standard with a port for nitrogen assistance

Slightly higher PAR for better flower density

5-1) and balanced pH (5

Wall Mount Duct Shutter 4 - White Steel 4" Wall Mount Duct Shutter commercial-greenhouse-fixtures this stuff is highly concentratedA wall mounted shutter designed for use with grow rooms, dryers, attics, and other HVAC applications. Features built in rubber stoppers that dampen slamming vent blades and ensure complete blockage. Non return thin louvers that close when fan is not in use to prevent outside air and debris from entering. Durable, lightweight steel body that is rust resistant can withstand most weather conditions. Duct Opening Diameter: 4 inches Front Plate Size: 6. 69