A.Quality steel plate inside lining B.U type reinforced ribbons C.Door leaf edge lacing D.Strengthen anti-pry frame E.Strong plate (for installation of expanding bolt) F.Decorative wood line G. Side lock points H. HDF board veneered with naturalwood skin I. Wide vision peephole J. Fixation pin K. Quality core-inserted security lock L. Strong hinge M. Sound-insulated, warmth reseration, honey comb N. Thicken door leaf frame O. Sound-insulated rubber seal