Lattice Return Air Grille 600-38X38 Step Down Ceiling Diffuser inner dimension and outside dimension

inner dimension and outside dimension sizes available * Tamper proof screws * Standard Color

1/2" spacing dual angular louvers for strength and maximum free area

700 CB20C - corner

Heavy Duty Construction

T-Bar Modular Core Diffuser with Round Collar 18-20

Lattice Return Air Grille 600-38X38 Step Down Ceiling Diffuser inner dimension and outside dimensionStandard 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