The Defend Door steel entry door system has a multipoint locking mechanism that slides three deadbolts into place. The center deadbolt is held tight by an 18-in. solid lock block. The 24-gauge steel door features security hinges with interlocking tabs and a heavy-duty aluminum frame. The energy-efficient Defend-Door is available in 15 colors with clear glass or a choice of two leaded glass families and a variety of hardware options.