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Ships within 48 hours · Estimated delivery Oct 29 - Nov 3
3 hour fire resistance rating
Hand operated lever for easy filter access
Adjustable aluminum curved blades
Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system
Square to round 2" collar with roll formed retention bead - available in square sizes only
Lattice Return Air Grille 600-28X28 Step Down Ceiling Diffuser 3 hour fire resistance ratingStandard 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
