Description
Marked circles for cutout
actual front end outer dimensions are approximately 22 5/8" width X 42 5/8" height
actual front end outer dimensions are approximately 12 5/8" width X 8 5/8" height
Actual Filter Size – 31 3/4"w x 27 3/4" x 1"
actual front end outer dimensions are approximately 13
18" x 22" or 22" x 18" Cube Core Eggcrate Return Air Filter Grille for 1" Filter steel Marked circles for cutout+ Product Details Perfect Fit & Easy Sizing Designed for a 18" x 22" OR 22" x 18" duct opening (measured at the opening), with actual outer dimensions of 20. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 17. 75" x 21. 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