Springs are the key to making sure your garage door opens and closes easily. They serve as counterweights, just like they did in centuries past when people would use them for their doors or today’s models do too! For example, if one side weighs 100 pounds more than another (or any number), then with these helpful components there will always be an opposing force balancing out that weight so you don’t have trouble opening up those hinges every time it rains outside.