24" x 32" or 32" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White + Product Details Size –

+ Product Details Size – 22"w X 18"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are 17

Lock and Key included

Secure Locking Mechanism – Features a permanently attached eight-tumbler lock with a supplied key for added security

24" x 32" or 32" x 24" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_White + Product Details Size –+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 32" OR 32" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 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