SET OF 3 DIFFERENT SIZES - Large(15.9" x 6.2" x 5.4"), Medium(12.6" x 5.3" x 5.1") and Small(9.3" x 4.5" x 4.7"). Store all the outlet apparatuses including multiple power strips, cords, adapters, splitters, etc. | MANAGEMENT & VENTILATION SYSTEM - the sides have a large opening at each end to allow for the power chords to fit in the box then exit to the power connections in wall and equipment providing plenty of cooling. | KIDS & PETS FRIENDLY - Clasp design to protect kids and pets from the power strips and other electrical equipment. | ELECTRICALLY INSULATED - Material is stronger and more impact resistant than other plastics, which allow you to safely manage and customize your cable wire cord plug organization or clean-up effort. | FREE CABLE TIES - Each box comes with a plastic strap (39” long) to manage your wires, and you can cut it to the length you need.