AC Infinity Wall Mount Duct Shutter 4-Inch White Steel Sol Soils Inner Bottom Dimensions: 19¾" x

Inner Bottom Dimensions: 19¾" x 9½"

Take the guesswork out of soil health with the Luster Leaf Rapitest Digital Soil Test Kit

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152280 Lm plus or minus 5% @ AC240V

AC Infinity Wall Mount Duct Shutter 4-Inch White Steel Sol Soils Inner Bottom Dimensions: 19¾" xDescription A 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