Can the GUAC1 or GUAC2 USB GFCI receptacle be installed in a standard size wall box? May 16, 2024 15:17 Updated Follow Those devices require an extra deep box for installation. Related articles What is an “extra deep wallbox”? Where can I install a GUAC1 or GUAC2 GFCI combination USB outlet? Video - How to Install a T5631, T5632 and T5832 USB Charging Receptacle Why are wire leads used instead of screws on the GUAC1 and GUAC2 GFCI USB devices? How do I know if I need Type A or Type C charging port?