28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Supply Grille + Product Details Size –

+ Product Details Size – 22"w X 36"h is the size for the duct opening measurement only

this piece is the perfect touch of class you need to add to your decor

actual front end outer dimensions are approximately 28 5/8" width X 20 5/8" height

+ Product Details Size - 30"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 24"h is the size for the duct opening measurement only

28" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Supply Grille + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 6" OR 6" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 8. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 75" x 5. 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 Made