8" x 32" or 32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 34.5"] Width_20in + Product Details Size -

+ Product Details Size - 32"w X 26"h is the size for the duct opening measurement only

R value rating of insulation - R3

Actual Filter Size – 7 3/4"w x 29 3/4" x 1"

high-impact clear plastic for long-lasting performance

actual front end outer dimensions are approximately 16 5/8" width X 32 5/8" height

8" x 32" or 32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 10.5" X 34.5"] Width_20in + Product Details Size -+ Product Details Perfect Fit & Easy Sizing Designed for a 8" x 32" or 32" x 8" duct opening (measured at the opening), with actual outer dimensions of 10. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 7. 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