28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille + Product Details Size –

+ Product Details Size – 14"w X 25"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height

14" x 3" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

[Outer Dimensions: 10

28" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Floor Grille + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 8" OR 8" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 10. 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