8" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 10.5"] 14in diameter + Product Details Size -

+ Product Details Size - 25"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 32 5/8" width X 20 5/8" height

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

+ Product Details Size - 28"w X 10"h is the size for the duct opening measurement only

Design – This airflow control component are made to connect to HVAC diffuser and restrict airflow

8" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 10.5"] 14in diameter + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 10. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 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 Made from strong,