16" x 25" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 The 1/2" black insulation

The 1/2" black insulation

+ Product Details Size - 34"w X 16"h is the size for the duct opening measurement only

line-height: 20px

this grille boasts a natural warmth and fine finish

16" x 25" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w16h16 The 1/2" black insulation+ Product Details Perfect Fit & Easy Sizing Designed for a 16" x 25" OR 25" X 16" duct opening (measured at the opening), with actual outer dimensions of 18. 5" W x 27. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 15. 75" x 24. 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