The Universal Mounting Bracket allows the Hide-Away to be mounted on top of surfaces such as desk tops or shelves. Tamper-proof screws provide additional security and portability. For optimum security V-Line highly recommends all Security Cases be properly installed. Recommended installation hardware: 4 each A 1/4" x 1" - 1A 1/2" lag bolts and 4 each A 1/4" flat washers (not included). Each Universal Mounting Bracket includes one special wrench to install supplied tamper-proof screws. Specifications Model: Universal Mounting Bracket Part no. 3912-UB BLK Outer dimension: 13A 1/4" x 8A 1/4" x 4" Outer dimension with Hide-Away installed in Universal Mounting Bracket 13A 1/2" x 9A 3/4" x 4A 3/4" Ship Wt. 4 lbs.