The one of the significant parts of our homes is the garage door. The garage door's an essential item in every house and we use it to get into or out of the house each day. A garage door is a large door in a garage that can be opened manually or electronically by a garage door opener. The garage doors are often of big size and capacity to accommodate vehicles such as cars. The size of the garage doors is different. The most important entrance to your house is the garage door, so you need to make sure it's secure from intruders who come in uninvited. You also want it to be safe to use for people living in your home. Electronic eyes that prevent the door from closing on humans or pets and an emergency release mechanism for opening doors during power failures are two of the most important safety features. The operating mechanism is usually spring-loaded or counterbalanced to offset the weight of the door and reduce the human or motor effort required to operate the door. Less common is that some garage doors are tilted or rotated in a horizontal direction. Doors are made of wood, metal or fiberglass and can be insulated so as not to lose heat.