16" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter Looks like it was just

Looks like it was just waxed

+ Product Description Enhance your HVAC system with our premium Aluminum Double Deflection Adjustable Air Supply Diffuser

actual front end outer dimensions are approximately 18 5/8" width X 12 5/8" height

our coils offer from 2300 to 6500 PSI

actual front end outer dimensions are approximately 20 5/8" width X 30 5/8" height

16" x 10" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10" Diameter Looks like it was just+ 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