You know, in general, doors are a very important element of the design of your home. Believe me, a lot really depends on it. They are designed primarily for sound insulation and creating a personal space for family members. The exterior door protects the property of the owners and plays an important role in the thermal insulation of the room.They have less thickness and strength. Rooms where money, valuable property and documents are stored are fenced with a thick solid canvas with a built-in lock. You can order 6.9' doors using special websites.