24" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 1-Way Rigid gauge built for durability

Rigid gauge built for durability and long life in mind

+ Product Description Enhance your HVAC system with our Aluminum Return Filter Linear Bar Grille

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

+ Product Details Size – 8"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 26 5/8" width X 16 5/8" height

24" x 36" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 1-Way Rigid gauge built for durability+ Product Details Perfect Fit & Easy Sizing Designed for a 24" x 36" OR 36" x 24" duct opening (measured at the opening), with actual outer dimensions of 26. 5" W x 38. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 23. 75" x 35. 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