Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 12" Collar 14in diameter 32" x 8" Aluminum Spiral

32" x 8" Aluminum Spiral Duct Air Vent Grille Cover - Fully Adjustable Double Deflection HVAC Air Supply

actual front end outer dimensions are 10" diameter

Actual Filter Size – 24 3/4"w x 19 3/4" x 1"

actual front end outer dimensions are approximately 11

Black T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 24" x 24" - 12" Collar 14in diameter 32" x 8" Aluminum Spiral+ 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