26" x 26" Cube Core Eggcrate Return Air Grille Color_R-4.2 Yellow + Product Details Universal Fit

+ Product Details Universal Fit - Accommodates almost any thermostat with dimensions of 8-1/4" H x 5-3/8" W x 3-1/2" D

+ Product Description Enhance your HVAC system's efficiency and your home's aesthetics with our premium aluminum air vent diffuser

Just run your finger along the edge of the top plate and you’ll find a smooth finished surface

Actual Filter Size – 13 3/4"w x 5 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 4" duct openings

26" x 26" Cube Core Eggcrate Return Air Grille Color_R-4.2 Yellow + Product Details Universal Fit+ Product Details Size 26" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 27. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing electric