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Ships within 48 hours · Estimated delivery Sep 28 - Oct 3
Front blades are parallel to the shortest dimension
Airfoil blades individually adjustable on 3/4" centers
Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system
3 hour fire resistance rating
Lattice Return Air Grille 600-28X28 Step Down Ceiling Diffuser Front blades are parallel toStandard Features * 1 2" x 1 2" x 1 2" aluminum lattice return air grille * Surface mount grille with . 055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 600 O opposed blade damper * No Labor Collar Square to round (square sizes only) * 600 T T Bar mount * 1 2" x 1 2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes, inner
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