30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown 75" width X 35

75" width X 35

12" x 4" Floor Register HVAC Air Supply Grille - Heavy Duty Rigid Built - Plastic Never Rust Vent Duct Cover

+ Product Details Size - 12"w X 34"h is the size for the duct opening measurement only

+ Product Description This aluminum flex duct is intended to be used in heating

5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

30" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Brown 75" width X 35+ Product Details Perfect Fit & Easy Sizing Designed for a 30" x 8" OR 8" x 30" duct opening (measured at the opening), with actual outer dimensions of 32. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 29. 75" x 7. 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