The boxes are made of cold-rolled steel or stainless steel, have an IP55 rating, and come in various standard sizes from 200x200x150mm to 1800x1000x300mm. Note: The indoor concealed box can be customized. To order such indoor box, a letter “R' is specified when ordering; to order the concealed box sized 250 x 200 x 140, the order number is JXF252014R. JXF small distribution box is a widely used device in low-voltage power systems, designed for the distribution and control of electrical energy. All structural parts of the cabinet rack are.