Door is a moving structure that allows access or blocks entrance to a room, office or building. There are several types of doors including revolving doors, sliding doors, swing doors, collapsible doors, flush doors, louvered doors, fiber reinforced doors, laminated doors and aluminum doors. Each door type has its own advantages such as providing energy savings, security, soundproofing, aesthetic appeal, low maintenance and resistance to weather effects. Door costs vary depending on material and size, ranging from Rs. 35 to Rs. 2000 per square foot.