Steel construction Snap-in design for easy installation Durable coating finish: Brown
Aluminum foil vapor barrier protects the insulation from Deep plum cavity for improved performance Prescored back for 6” to 14” daimeter neck
Galvanized steel construction Snap-in design for easy installation 2” high collar with bead for flex connections For use with model #403301 butterfly damper Available size: 6”, , 8”, 10”, 12”, 14”
steel construction Adjustable butterfly damper with knob controls For use with model #403302 collar (6″-12″) Available size: 6”-14” Brown durable finish