36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe our Round Air Vent Supply

our Round Air Vent Supply Grille is the perfect addition

Actual Filter Size – 21 3/4"w x 25 3/4" x 1"

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

Design – Circular air supply valves - designed to be used in low and medium pressure ventilation air conditioning systems

+ Product Details Size – 22"w X 29"h is the size for the duct opening measurement only

36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Round Duct Pipe our Round Air Vent Supply+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 32" OR 32" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 75" x 31. 75" x 1" Premium Airflow Efficiency High performance cube core eggcrate design allows 95% airflow efficiency, reducing energy costs and maximizing HVAC system lifespan. Durable, Rust Free Aluminum