Do 3 gang shallow boxes exist? Help?! : r/electricians
Garvin 52141-1/2 4 Square Extra Shallow Junction Box, 1-1/4
PVC Shallow Outlet Box 1 Gang - Warren Pipe and Supply
Carlon® E9802D Type 2FSE Non-Metallic Rigid Shallow Device Box, PVC, 32 cu-in Capacity, 2 Gangs, 1 Outlet, 1 Knockout, 4.62 in L x 4.62 in W x 1.98 in D Dimensions | SMC