10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 32.5"] Insulated Line Set + Product Details Size –

+ Product Details Size – 10"w X 26"h is the size for the duct opening measurement only

Installation Location – Ceiling

You may think of grilles and registers as a generic component of the ventilation system in your house

actual front end outer dimensions are approximately 30 5/8" width X 32 5/8" height

Actual Filter Size – 29 3/4"w x 5 3/4" x 1"

10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 12.5" X 32.5"] Insulated Line Set + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 10" x 30" or 30" x 10" duct opening (measured at the opening), with actual outer dimensions of 12. 5" W x 32. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 9. 75" x 29. 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