Steel Blade Grille - Vertical Fixed Blade 937-24X8 Damper:Opposed Damper Standard Features * Airflow can

Standard Features * Airflow can be adjusted to 1

Blades are parallel to the longest dimension

Nylon bushings on adj

Soft white

Standard Features * T-Bar lay-in filter grille with steel removable perforated face * 3/16" holes on 1/4" staggered centers * 20" x 20" x 1" filter (not included) * Square collar for 20 x 20 duct * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * Square to round No Labor Collar

Steel Blade Grille - Vertical Fixed Blade 937-24X8 Damper:Opposed Damper Standard Features * Airflow canStandard Features *Surface mount return air grille * 0 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 937 O recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T T Bar mount * 905 HD reinforced construction * 905 IS insect screen * 1335 1338 Series stainless steel version * Tamper proof screws