16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil 75"H – fits a 18"

75"H – fits a 18" X 18" duct opening

this guard is designed to provide maximum protection against tampering while maintaining a clean and professional appearance

is fireproof and ensures efficient thermal performance

Say goodbye to vibrating louvers - this grille ensures a quiet

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10” x 8” duct openings

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Copper Coil 75"H – fits a 18"+ 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