T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Color_R-4.2 Yellow + Product Details Size -

+ Product Details Size - 28"w X 10"h is the size for the duct opening measurement only

this guard ensures long-lasting protection while offering a sleek

actual front end outer dimensions are approximately 28 5/8" width X 32 5/8" height

40" x 16" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 14" Collar Color_R-4.2 Yellow + Product Details Size -+ 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