Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 12" Collar Compatible With Duct 10in + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 16" OR 16" x 24" duct opening (measured at the opening)

14"w X 3"h Is The Size For The Duct Opening Measurement Only

This safeguards it from corrosion caused by dirt

only measure the "hole" in the wall

Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 12" Collar Compatible With Duct 10in + Product Details Perfect Fit+ 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 12" 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