... qualityFeatures: 1) Material cold-rolled steel 2) Thickness of the door leaf 5cm/7cm/9cm 3) Frame outer sizes (H x ... multi-point lock, handles,peephole, hidden doorbell, rubber seal and magnetic seal, doorbell, installingbolts, stainless steel threshold 5) Infilling honeycomb material ... ,guards against thefte) Environmentally friendlyf) Bright, lustrous and durable steel security door