Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Height_18in you can't go wrong with

you can't go wrong with this decorative grill

the edges are perfect for mud and flange installation once the sheet rock is securely in place

+ Product Details Size - 40"w X 6"h is the size for the duct opening measurement only

and construction professionals

Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Height_18in you can't go wrong with+ Product Details Size 24"w X 24"h. These are specially sized to fit into all drop ceilings, also called T Bar systems. Can be hooked up with our "Butterfly Dampers" for precise airflow control. For 14" duct opening High Quality Heavy gauge all steel construction. Installation Location Ceiling. Design These Supply Diffusers with integral round necks are recommended for heating, ventilating and cooling. Round neck to square face construction results in