[Sturdy Construction] Our junction boxes are made of high-quality ABS plastic material with excellent impact resistance and electrical insulation. [Indoor and outdoor use] Waterproof and dustproof, the waterproof junction box can effectively block splashing water, rain, dust, snow, oil, ultraviolet rays, etc. [Safety Certification] IP65 waterproof level, the electrical box does not contain harmful substances. The plastic box is pre-drilled for easy installation and modification. [Wide Applications] Our junction boxes are suitable for a variety of applications: residential wiring and connecting electrical equipment such as light fixtures, switches and sockets; protecting and connecting electrical equipment on machines, motors, etc. [SIZING INFORMATION] Overall exterior dimensions: 7.9 inches x 3.9 inches x 2.8 inches; interior dimensions: 6.9 inches x 3.0 inches x 2.5 inches (with a usable interior space that is not obstructed by any internal components such as screws or partitions).