Lattice Return Air Grille 600T-2X4 Finish:Designer Color - Velvet Black 3 hour fire resistance rating

3 hour fire resistance rating

Tool Operated Opposed Blade Damper

Half-length screwdriver operated Scoop Extractor

Round Bowtie Damper

All steel galvaneal construction

Lattice Return Air Grille 600T-2X4 Finish:Designer Color - Velvet Black 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