36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w14h14 + Product Details Heavy-Duty Steel

+ Product Details Heavy-Duty Steel Construction - Made from 20-gauge steel for superior strength and durability

much more than the required 700 psi for r410

+How To Measure A Grille Overall Size:

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

The 1/2" white insulation

36" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w14h14 + Product Details Heavy-Duty Steel+ Product Details Perfect Fit & Easy Sizing Designed for a 36" x 32" OR 32" x 36" duct opening (measured at the opening), with actual outer dimensions of 38. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 35. 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