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Zinc plated steel closure spring
904 Series Submittal
1x1 T-Bar (10" x 10" duct)
T-Bar Modular Core Diffuser with Round Collar 18-20
Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser
Lattice Return Air Grille 600-18X40 Residential Registers & Grilles Zinc plated steel closure springStandard 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
