16" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter fixed bar + Product Details Size –

+ Product Details Size – 16" x 36" or 36" x 16" is the size for the duct opening measurement only

The tool-free latch allows hassle-free maintenance

+ Product Details Size – 6" x 16" or 16" x 6" is the size for the duct opening measurement only

All of these grills have dampers

+ Product Details Size - 8"w X 32"h is the size for the duct opening measurement only

16" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter fixed bar + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 10" OR 10" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 12. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 9. 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