Aluminum is a highly resistive material. Resistance comes first when large doors covering large openings are needed, which is usually very heavy. Manufactured doors and windows with large grommets are usually heavy, due to the weight of the frame which is made of wood, polyurethane (PVC), iron and so on. Beside the main frame, the middle part of doors and windows which are made in variety of kinds specially glass, is heavy either. Manufactured aluminum doors in Doorvin factory are designed with the aid of committed and skillful designers and experts by using the best feedstock in high-tech factory.