Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 12" Vent Connection - Black Material_Anodized Aluminum + Product Details Size –

+ Product Details Size – 10"w X 4"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 24" OR 24" x 30" duct opening (measured at the opening)

both individually adjustable

Actual Filter Size – 23 3/4"w x 9 3/4" x 1"

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 2 Coned - 24" x 24" - For 12" Vent Connection - Black Material_Anodized Aluminum + 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.