This Reliance 50amp inlet box is well constructed and easy to install, with a good design for accessing the back of the connector for wiring. It is plastic and suitable for outdoor use, but may not be suitable for hot climates. It is also important to make sure the connector is made by Hubbell, as the Reliance Controls PBN50 with the Hubbell connector is far superior to the Marinco connector found in the Reliance Controls PB50.