16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Size –

+ Product Details Size – 12" x 14" or 14" x 12" is the size for the duct opening measurement only

+ Product Details Size - 16"w X 28"h is the size for the duct opening measurement only

our Circular Air Supply Valves are ideal for low and medium pressure ventilation air conditioning systems

+ Product Details Size – 2"w X 12"h is the size for the duct opening measurement only

Actual Filter Size – 7 3/4"w x 9 3/4" x 1"

16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 12" OR 12" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 11. 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