8" x 32" or 32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 34.5"] 10in diameter Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 6" duct openings

+ Product Details Size – 24"w X 12"h is the size for the duct opening measurement only

+ Product Details Size - 16"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 24 5/8" height

Tamper-Proof Locking Mechanism – Includes an eight-tumbler lock with a supplied key to prevent unauthorized access

8" x 32" or 32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 34.5"] 10in diameter Ideal for Walls & Ceilings:+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 32" or 32" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 75" x 31. 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