16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 8" this grille offers durability and

this grille offers durability and resistance to rust and corrosion

Actual Filter Size – 33 3/4"w x 7 3/4" x 1"

+ Product Details Durable Construction - Made with clear

Actual Filter Size – 15 3/4"w x 24 3/4" x 1"

actual front end outer dimensions are approximately 34 5/8" width X 16 5/8" height

16" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Compatible with Duct 8" this grille offers durability and+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 12" OR 12" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 14. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 11. 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