The Hollon TTW-2015E Through The Wall Deposit Safe features 1/2” steel door, five 1 1/4” solid steel active locking bolts. There is an option for either a UL listed Group II Dial Combination Lock or a S&G Spartan Electronic Lock. The lock and relocker are protected by a drill/ballistic resistant hard plate. It also features a removable and adjustable shelf. Investing in a depository safe provides an important measure of protection for retail and wholesale businesses that manage cash receipts every day.