22" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum - Cube Core Example: If your hole is

Example: If your hole is 20" wide by 14" tall

+ Product Description Upgrade your HVAC system with our 5" Round Air Vent Supply Grille

+ Product Details Size - 12"w X 20"h is the size for the duct opening measurement only

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

Actual Filter Size – 7 3/4"w x 29 3/4" x 1"

22" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum - Cube Core Example: If your hole is+ Product Details Perfect Fit & Easy Sizing Designed for a 22" x 28" OR 28" x 22" duct opening (measured at the opening), with actual outer dimensions of 24. 5" W x 30. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 21. 75" x 27. 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