Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 6" Vent Connection - Black Round Damper Ring + Product Details Size –

+ Product Details Size – 12"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 38 5/8" height

actual front end outer dimensions are approximately 34 5/8" width X 32 5/8" height

excluding the old vent cover

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Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 6" Vent Connection - Black Round Damper Ring + 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 6" 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