Spec Sheet Preview: The Alpha Communications® models IH700G, IH700W and OH700 are surface mounting boxes, made of heavy gauge steel and painted in a powder coat epoxy finish for durability. They are our most popular surface mounting boxes, and are used with a variety of surface mount intercom remote and master stations. Theses boxes are finished on top, bottom and both sides, and are partially open in the back to allow for wire access. They have inside mounting holes to allow for mounting to popular electrical boxes, o …