14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille w20h20 + Product Details Size -

+ Product Details Size - 30"w X 26"h is the size for the duct opening measurement only

this thermostat guard is the perfect solution for residential

actual front end outer dimensions are approximately 10 5/8" width X 14 5/8" height

Heavier gauge than needed

14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille w20h20 + Product Details Size -+ Product Details Size 14" x 36" or 36" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" X 37. 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