Our 12-guage fabricated meter vault is built to withstand heavier traffic than our standard vault. The box is made of riveted two piece 12-guage galvanized copper-steel. The lid is made of 1/2" diamond floor plate steel-reinforced with a 10" x 10" lock-down reader door in the center, a lock-down removable section for work access, and a ring that can be bolted to the vault. The lock-down mechanism is a pentagon head threaded brass bolt. Eliminates built in-place concrete vaults and cast iron covers.