T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 12" x 12" - 6" Collar return filter but still light and handy

but still light and handy

actual front end outer dimensions are approximately 12 5/8" width X 18 5/8" height

+ Product Details Size - 28"w X 20"h is the size for the duct opening measurement only

+ Product Details Size – 24"w X 36"h is the size for the duct opening measurement only

+ Product Spec Sheet Outdoor Louver Spec Sheet

T-Bar Drop Ceiling Grille - Flat Plate Plaque Diffuser - 12" x 12" - 6" Collar return filter but still light and handy+ Product Details Size 12"w X 12"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 6" 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