Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 14" Vent Connection - Black d + Product Details Size –

+ Product Details Size – 34"w X 18"h is the size for the duct opening measurement only

and with a built-in back 1/2" mesh they also protect you from annoying rodents like mice

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

Some of our best features aren't readily apparent

Design – This airflow control component are made to connect to HVAC diffuser and restrict airflow

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 14" Vent Connection - Black d + 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 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.