Greentech Air Duct Grill Mask 24 Inch Roll 300 Ft. Length Perforated high efficiency particulate air non porous surface simply by

non porous surface simply by flipping a switch and waiting for the green light

zinc plated

Includes alloy steel snap hook for harness attachment and rebar hooks for anchorage connections

CFM Hi / Low: 11

Item number: HPM-3H

Greentech Air Duct Grill Mask 24 Inch Roll 300 Ft. Length Perforated high efficiency particulate air non porous surface simply byGreentech Air Duct Grill Mask 24 Inch Roll 300 Ft. Length Perforated The Net Zero Grill Mask is perfect for covering holes & duct registers while testing duct work, houses, or enclosures. This self adhesive grill mask comes in easy to use rolls 300 feet long by 24 inches wide and is great for use on your job site. The grill mask sticks firmly, forms an effective air seal, is perforated, and wont peel painted surfaces when removed.