26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size -

+ Product Details Size - 14"w X 34"h is the size for the duct opening measurement only

including the ability to mount without removing the thermostat when using the ring base

actual front end outer dimensions are approximately 18 5/8" width X 32 5/8" height

Durable Construction – Made from high-quality

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

26" x 22" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 26" x 22" OR 22" x 26" duct opening (measured at the opening), with actual outer dimensions of 28. 5" W x 24. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 25. 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