Watchguard WGP01876-001 mounting bracket

Used condition. Multiple in stock and each has light cosmetic wear. Some have very small holes drilled from additional accessories mounted. 
WE CANNOT FIGURE THE EXACT PURPOSE OF THIS BRACKET. IT IS NOT PULLING UP ON THE CURRENT WATCHGUARD PRICE SHEET. WE BELIEVE ITS FOR AN OLDER DV1 SYSTEM. 
Part #WGP01876-001