6" Round Air Vent Supply Grille With Sponge Gasket And Mounting Frame - HVAC Vent Duct Register Cover [Outer Dimensions: 8"] Color_Red Oak Design – Unrestricted airflow for

Design – Unrestricted airflow for your HVAC system - adjustable one-way louver with full horizontal airflow directional control - single deflection supply grill with 96% airflow - noise free components - no vibrating louvers etc

All of these grills have dampers

actual front end outer dimensions are approximately 20 5/8" width X 14 5/8" height -

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

Quality Packaging – Every part is hand inspected for quality before it is packaged

6" Round Air Vent Supply Grille With Sponge Gasket And Mounting Frame - HVAC Vent Duct Register Cover [Outer Dimensions: 8"] Color_Red Oak Design – Unrestricted airflow for+ Product Details Size The listed 6" diameter refers specifically to the size of the duct opening. However, please note that the total outer dimensions of the grille measure 8" in diameter. Design Circular air supply valves designed to be used in low and medium pressure ventilation air conditioning systems, of up to 300m3 h. Adjustable airflow control by rotating the middle disk, the gap will expand and retract to meet perfect air supply needed.