Lattice Return Air Grille 600-22X32 Commercial listed Fire-Resistance Diffuser * TVB

listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square Collar

3 hour fire resistance rating

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

Satin polished finish

Options Recessed screwdriver operated Opposed Blade Damper

Lattice Return Air Grille 600-22X32 Commercial listed Fire-Resistance Diffuser * TVBStandard 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