26" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Ceiling + Product Details Size –

+ Product Details Size – 8"w X 8"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

these louvers provide exceptional protection against rain and water

Mounted with frame and bayonet joint which are included

actual front end outer dimensions are approximately 22 5/8" width X 16 5/8" height

26" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Ceiling + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 34" OR 34" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 75" x 33. 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