Description: Use : Indoor and outdoor electrical , Communicate and fire equipment, Ironmaking & Steelmaking , Stone oil chemical, Electronic plants etc.. Better material : High quality thermoplastic ABS materials ( No corrosive, antistatic, better insulation ). Honeycomb baseboard : Fixed in the bottom,easier to install terminal box and other instruments. Movable bracket : Designed ovetail groove from inside to the outside of the four corners. Erection column : With the spin nut type, better fixed guide rail terminal box and wiring board. Specification: Range : Junction box Color : Gray box body Function : Waterproof IP66 Outside Size : 100x100x50mm/3.94x3.94x1.97 inch Material : ABS The thinnest part has an average thickness of 3 mm Installment : Inner install and outer install Package Includes: 1 Piece ABS plastic waterproof box Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !