This is a Panasonic (formerly Sunx) LS Series mounting bracket, specifically the MS-CX-3 back-angled mounting bracket. It comes with two M3 screws, each 12 mm (0.472 inches) in length, including washers. The bracket is designed for secure mounting in LS Series applications.

You can click on the BUY or RFQ button to purchase MSCX3 from an authorized PANASONIC / SUNX distributor.
You can visit the PANASONIC / SUNX website for support.
PANASONIC / SUNX