12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Outdoor Vent Covers Looks Like It Was Just

Looks Like It Was Just Waxed

this grille offers durability and resistance to rust and corrosion

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening)

+ Product Details Size - 20"w X 18"h is the size for the duct opening measurement only

12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Outdoor Vent Covers Looks Like It Was Just+ Product Details Perfect Fit & Easy Sizing Designed for a 12" x 32" or 32" x 12" duct opening (measured at the opening), with actual outer dimensions of 14. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 11. 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