Whirlwind HBL2416 NEMA L14-20 Flanged Outlet

The HBL2416 is a Hubbell flanged outlet, NEMA L14-20 female, in white nylon. It is rated 20 A at 125/250 V, three-phase, four wire, and the contacts are solid brass.

The flange is the point: it is made for panel mount applications, so it is what goes into the face of a distro box or a rack panel rather than onto the end of a cable. Terminals are 10-32 screws.