Lattice Return Air Grille 600-12X48 Residential Registers & Grilles Standard Features * 4000 -

Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *

One piece curved frame with gasket fits flush to spiral pipe

165° replaceable fusible link

Standard Features * Field installable butterfly damper * Available in sizes 6

Lattice Return Air Grille 600-12X48 Residential Registers & Grilles Standard Features * 4000 -Standard 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