Thickness: 0.8 to 2.0mm
Diameter of knockout holes are 1/2, 3/4 and 1-inch
Interior size:<ul>
4 x 2-1/8 x 1-1/2-inch, 11.5 cubic inches
4 x 2-1/8 x 1-7/8-inch, 13.0 cubic inches
4 x 2-1/8 x 2-1/8-inch, 16.5 cubic inches
Used for convenience outlets and surface mounted wiring

Contact person: Bruce Red
Interested buyers pls feel free to contact me asap

We are looking forward to your kindly enquiries.