12" x 32" or 32" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 10in diameter Every grille has a front

Every grille has a front end frame

Easy Unrestricted Air Flow For Your HVAC System

+ Product Details Size – 36"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 14 5/8" height

+ Product Details Size – 18"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 10in diameter Every grille has a front+ 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