18" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 line-height: 22px

line-height: 22px

+ Product Details Size - 34"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

this vent cover provides superior durability while maintaining a sleek

18" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w8h8 line-height: 22px+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 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