Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 8" Vent Connection - Black Insulated Line + Product Details Size -

+ Product Details Size - 26"w X 22"h is the size for the duct opening measurement only

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+ Product Details Outer dimensions: 25

+ Product Details Size - 12"w X 8"h Is The Size For The Duct Opening Measurement Only

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 8" Vent Connection - Black Insulated Line + Product Details Size -Drop Ceiling HVAC Supply Grille For T Bar Lay In 2 Coned 24" x 24" For 6" Vent Connection Black These are specially sized to fit into all drop ceilings, 24"x 24", also called T Bar systems. Can be hooked up with our "Butterfly Dampers" for precise airflow control Why HVAC Premium? You may think of grilles and registers as a generic component of the ventilation system in your house. But they are also the most visible representation of you air system.