8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 26.5"] fixed bar Universal Fit – Measures 6-1/4"

Universal Fit – Measures 6-1/4" wide x 4-3/4" high x 3" deep

+ Product Details Size – 14" x 28" or 28" x 14" is the size for the duct opening measurement only

75"H – fits a 16" X 10" duct opening

actual front end outer dimensions are approximately 36 5/8" width X 24 5/8" height

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

8" x 24" or 24" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 26.5"] fixed bar Universal Fit – Measures 6-1/4"+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 24" or 24" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 26. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 23. 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