34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w26h26 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 20" OR 20" x 36" duct opening (measured at the opening)

actual front end outer dimensions are approximately 26 5/8" width X 24 5/8" height

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size – 8" x 14" or 14" x 8" is the size for the duct opening measurement only

+ Product Details Size – 10" x 16" or 16" x 10" is the size for the duct opening measurement only

34" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w26h26 + Product Details Perfect Fit+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 22" Or 22" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 22. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 21. 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