16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille rg1010 Installing the plaster frame is

Installing the plaster frame is effortless – secure it into your sheetrock

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 6" duct openings

+ Product Description Our Clear Plastic Thermostat Guard is the ultimate solution for protecting your thermostat while ensuring universal compatibility

Design – These are specially sized to fit into all drop ceilings

+ Product Details Size – 20"w X 22"h is the size for the duct opening measurement only

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille rg1010 Installing the plaster frame is+ Product Details Size 16" x 24" or 24" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 25. 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