CR Laurence 42" x 42" Level 1 Bullet-Resistant Transaction Window This secure installation features a CR Laurence 42" x 42" Level 1 bullet-resistant frame paired with 1 3/16" Level 1 bullet-resistant glass, offering enhanced protection and durability. A 12" deep stainless steel shelf with integrated deal tray ensures smooth transactions. Expertly installed into an existing steel frame, finished with brake metal to seamlessly match the surrounding window system.