A plastic ceiling diffuser with incorporated ceiling box. For residential/light commercial use & offered in 8"x 8" square, 6x6" square, & 6" and 8" round. Designed for 1-man installation only working below the ceiling, they offer convenience & speed. Note the maximum ceiling thickness (drywall) is 1.25".

Features:

• Stepped collar for multiple duct sizes, collar tabs easily tear away unneeded sections
• Virtually air tight butterfly damper rubber gasket delivers superior seal when closed
• Damper handle allows smooth, easy turning adjustment from below for fully open to tightly closed position
• High grade polymer grille resists breakage, scratching, yellowing and fading
• Patented one piece grille, damper box and lightning fast installation