A comment
Previously, a cheap Chinese door was installed, which did not suit us not in safety, not in tightness, yes, what can I say, even the quality at the door was not the best. They began to choose and we liked the door of the Buldors 12T company, they are produced in Kazan.
The door has a powder coating, it can be noted about it that it is wear-resistant. The steel sheet is 1.5 mm thick. The box is seamless, provides the best rigidity, is installed on anchor bolts.
Filler polyurethane foam. On the box are two contours of seals.
Loops with a persistent bearing, thanks to them there is a smoother course and durability is provided. On the loop side installed anti-removable bolts in the amount of 2 pieces.
The main lock is cylinder, the second class of burglary resistance. Additional lever lock, also of the second burglary resistance class. Plus there is a night valve.
pros
Reliability, durability, convenience, value for money.