It describes HA, HK, and LGD series boxes with dimensions ranging from 100-415mm in length, 105-323mm in width, and 75-140mm in height. Paraguay power strips and PDU power distribution units for surface mount, rack mount and general purpose applications. Quality Paraguay power strips, in stock, for standard duty applications up. Electrical box dimensions typically refer to: Correct dimensions ensure: Single-gang boxes are the most common type, used for one switch or outlet. Common uses: wall outlets, light switches, low-voltage controls. Check out this quick guide: Think about how many devices you need, where you will install the box, and the environment.