Metal hollow door 1. Door skin:24-26 guage galvanized steel 2 .Solid wood as lock block 3 .Filling with poly foam . 4 .Finish with powder coating 5. Knock down packing nf-86 or nf-108 frame 6 .Finger joint pine as door edge;steel edge is optional 7 .Hardwares:round lock or 5-point lock optional, brass hinge or stainless hinge optional Over 660sets/40hq