16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 text-align: center

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actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height

Actual Filter Size – 29 3/4"w x 5 3/4" x 1"

Actual Filter Size – 29 3/4"w x 11 3/4" x 1"

+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w32h32 text-align: center+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 34" OR 34" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 36. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 33. 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