Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 10" Vent Connection - Black Grilles + Product Details Size –

+ Product Details Size – 20"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 34"w X 22"h is the size for the duct opening measurement only

Perfect for use in living rooms

+ Product Details Size - 24"w X 26"h X 2"d (for duct opening measurement only)

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 10" Vent Connection - Black Grilles + 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 cielings, 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.