Steel Blade Double Deflection Diffuser 933-20X12 Damper:Opposed Damper Standard Features * Galvaneal steel

Standard Features * Galvaneal steel face designed for high air volume delivery * 360 air diffusion * No Labor Collar * Seismic support hangers * Available sizes: 6"

Nylon bushings on adjustable blades prevent metal on metal rattle

904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 4" Duct Opening (front blades parallel to shortest dimension)

Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension

Nylon bushings on adj

Steel Blade Double Deflection Diffuser 933-20X12 Damper:Opposed Damper Standard Features * Galvaneal steelStandard Features * Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Double deflection diffuser * Front blades parallel to longest dimension * Back blades parallel to shortest dimension * All blades adjustable allowing 4 way flow adjustment * Soft White Options * 933 O with recessed screwdriver operated