Vastu Shastra indicates us door and windows which are made of woods are the best. In olden days the different type of house such as Hut, House and Bungalows etc are made up woods. The saints lived in hut which was made up plant leaves and woods. Wood get always negative energy and brings positive energy. Aluminum is a metal. Metal products, things such as door, window, table, chair, Almirah and etc are medium classes. These things are not harmful for people. they are also beneficial in many ways such as Happiness, money increasing and children education. According to direction and places of door and windows should be coloured.