Wall-mounted boxes should be 4. This height makes it easy to reach without bending or stretching. Ground-mounted boxes should be raised 2 to 4 inches to avoid. This document provides specifications for various distribution boxes including dimensions, mounting sizes, and number of ways. The wide range of distribution boards enables each customer to select an individual and economical. JXF Series Power Distribution Box product is box assembled with various control functions by customer-selected components, and there are many box sizes and specifications and the size of the box can be customized according to the size of the installation elements. There is no single global chart for standard. Place the mounting insert on the mount-ing studs at the lower side of the enclo-sure. Fastening Convenient front-side fastening of the mounting.