Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 14" Vent Connection - Black d please note that the total

please note that the total outer dimensions of the grille measure 12" in diameter

+ Product Details Size – 28"w X 12"h is the size for the duct opening measurement only

The premium durable material guarantees that they will never rust or wear through

+ Product Details Size - 25"w X 25"h is the size for the duct opening measurement only

powder-coated surface is scratch-resistant

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 14" Vent Connection - Black d please note that the totalDrop 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 ceiling's, 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.