The Berlin Door Set with Otto Lever + Deadbolt is designed and crafted to stand the test of time. Each set is carefully assembled by hand, to order, from solid brass parts and precision-crafted mechanisms. Made by Emtek, a respected manufacturer with decades of door hardware experience, in the U.S.A. from domestic and imported parts. Consult Spec Sheet for complete product dimensions and installation information. Please contact our Customer Support team with any questions.