Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 12" Vent Connection Grilles + Product Details Size –

+ Product Details Size – 20"w X 22"h is the size for the duct opening measurement only

Actual Filter Size – 24 3/4"w x 27 3/4" x 1"

See chart below:

+ Product Details Size – 10"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 24"h is the size for the duct opening measurement only

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 12" Vent Connection Grilles + Product Details Size –+ Product Details Size 24"w X 24"h. 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. For 12" Round Duct Opening Spiral or Flex High Quality No sharp surface edges. Just run your finger along the edge of the top plate and youll find a smooth finished surface. Installation Location Ceiling. Design Easy unrestricted air flow for your