Most of the companies selling fire doors outsource the production of fire doors to other companies. This situation reflects negatively on the customer in terms of cost. In other words, it is very difficult to find a fire door that is both cheap and standard, except the manufacturer. Fire doors must carry certain standards. Therefore, non-standard doors cannot protect you from the fire, which is their main duty in case of fire. As a consumer, you should definitely inquire whether the companies that sell fire doors are manufactured in-house and whether the fire door carries the required standards. Fire door is a building material whose quality should be questioned rather than its prices. Because you can understand that the fire door carries the standards only at the time of the fire. Therefore, you should question whether the fire door is made within the standards during the manufacturing process.