12" x 36" or 36" x 12" Cube Core Eggcrate Return Air Grille 2-Way Locking Security System – Features

Locking Security System – Features a built-in eight-tumbler lock and a supplied key to prevent tampering and maintain consistent temperature settings

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

crafted from heavy gauge steel for unparalleled durability

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

Design – This airflow control component are made to connect to a drop ceiling lay-in diffuser grille

12" x 36" or 36" x 12" Cube Core Eggcrate Return Air Grille 2-Way Locking Security System – Features+ Product Details Size 12" x 36" or 36" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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