Fantech 5ACC39RD - Roof Mount Damper 39x39
The Fantech 5ACC39RD Roof Mount Damper comes with pre-punched conduit hole knock-out.
The Fantech 5ACC39RD Roof Mount Damper has a 2-inch deep frame made from 19-guage galvanized steel. Its blades are made from aluminum and have felted edges for noise-free operation. This roof mount damper is designed for 39 1/2 x 39 1/2 roof openings. It has an outside flange measuring 39" x 39". This damper uses a 36" fan. It comes with pre-punched conduit hole knock-out.