Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 8" Collar 38 Actual Filter Size – 31

Actual Filter Size – 31 3/4"w x 27 3/4" x 1"

+ Product Details Size – 10" x 12" or 12" x 10" is the size for the duct opening measurement only

Explore our listing for 46mm replacement blades to keep your cuts consistently sharp

Traditional HVAC systems were designed for cold air

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 36" OR 36" X 16" duct opening (measured at the opening)

Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 8" Collar 38 Actual Filter Size – 31+ 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 8" 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