32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set 75"H – fits a 8"

75"H – fits a 8" X 8" duct opening

+ Product Details Size – 20" x 34" or 34" x 20" is the size for the duct opening measurement only

One model suits both T-Bar and Drywall installations

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line Set 75"H – fits a 8"+ Product Details Perfect Fit & Easy Sizing Designed for a 32" x 12" OR 12" x 32" duct opening (measured at the opening), with actual outer dimensions of 34. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 31. 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