34" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Outdoor Vent Covers this air vent diffuser is

this air vent diffuser is built to last

polished brass

+ Product Details Size – 34" x 34" is the size for the duct opening measurement only

Easy Installation: Comes with mounting screws for a secure fit in minutes

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34" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Outdoor Vent Covers this air vent diffuser is+ Product Details Perfect Fit & Easy Sizing Designed for a 34" x 26" Or 26" x 34" duct opening (measured at the opening), with actual outer dimensions of 36. 5" W x 28. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 33. 75" x 25. 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