UNILETS Outlet Box, Number Of Outlet: 3, Material: Copperfree (4/10 Of 1 PCT Maximum) Aluminum, Size: 1-1/4 IN, Cable Entry: (3) 1-1/4 IN GRT Hub, Cubic Capacity: 31 CU-IN, Knockouts: No, Cover Opening: 3.94 IN, Form Number: 2, Height: 4