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Divided 2-way multi-louver and combination shut-off
Square to round transition collar
4-way flush step down steel diffuser
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
Adjustable modular cores with fixed curved blades
Aluminum Airfoil Blade Grille - Vertical Fixed Blade 908-18X48 Accessories Divided 2-way multi-louver and combinationStandard Features * Extruded . 055 T6 aluminum surface mount return air grille * 0 fixed blades parallel to shortest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 908 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
