Switch Box, Gangable, 1-1/2" Deep, Conduit Knockouts, Ears3" x 2", 1 Gang, Gangable, Switch Box with Plaster Ears, Drawn, Metallic. Depth: 1 1 2". Side Knockouts: (2) 1 2". Bottom Knockouts: (1) 1 2". Cubic Inches: 7. 5" Switch boxes are used to house wiring devices such as switches or outlets. Gangable switch boxes offer the option of constructing a box to hold two or more devices. Also known as: 050169004005, 400, RAC400, cut in, cut in box, SG METAL CUT IN 400