Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 12" Vent Connection - Black w12h12 One model suits both T-Bar

One model suits both T-Bar and Drywall installations

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Premium Airflow Efficiency - High-performance cube core eggcrate design allows 95% airflow efficiency

+ Product Details Size - 30"w X 12"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 - Black w12h12 One model suits both T-Bar+ 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