9 inches tall (traditional bed height) Box springs are the most frequent name for traditional bed foundations. The usual box spring height is 9 inches, with a low-profile box spring height of 5 to 5.5 inches available. These box springs are made of wood or metal and are intended to support a mattress and attached box spring coverings. The average person can lift 50 pounds over their head. If you have more than one person helping you out of the truck, this amount should be divided between them. As always, use caution not to hurt yourself while lifting a heavy load. People who help you off the truck should keep 15 feet away from the actual load they are pulling. This gives them room to move if necessary without being in the way. Make sure that those who will be handling your load wear protective clothing such as gloves and safety goggles. You should also ask people not to eat, drink, or smoke within 20 minutes before starting to unload your vehicle because it can affect your ability to feel pain or suffer an injury. When lifting large objects, it is important to be in good physical condition. Make sure you take time out of your schedule to relax and have some fun once in a while. It will help you stay healthy and avoid getting injured.