28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles Actual Filter Size – 15

Actual Filter Size – 15 3/4"w x 31 3/4" x 1"

R value rating of insulation - r3

+ Product Details Size – 25"w X 20"h is the size for the duct opening measurement only

Elevate your space's aesthetic with a luxurious touch that complements any architectural style

+ Product Description Secure your thermostat with the heavy-duty Beige Metal Thermostat Guard

28" x 32" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Grilles Actual Filter Size – 15+ Product Details Perfect Fit & Easy Sizing Designed for a 28" x 32" OR 32" x 28" duct opening (measured at the opening), with actual outer dimensions of 30. 5" W x 34. 5" H. Please check the measuring guide to ensure a proper fit. Filter Size 27. 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