Measure twice. Order once!
Measure the opening in your floor, wall or ceiling. The width and length of your opening should match the duct opening sizes.
How do I know what size I need?
posted 2011 Jan by Jeff Mulder
posted 2011 Jan by Jeff Mulder
Measure twice. Order once!
Measure the opening in your floor, wall or ceiling. The width and length of your opening should match the duct opening sizes.