A king-size bed frame is designed to support a king-size mattress, which measures 76 inches wide by 80 inches long. This larger size provides ample space for couples or individuals who enjoy extra room while sleeping. King-size bed frames come in various styles, materials, and designs, allowing for customization to fit different bedroom aesthetics. Typically, a king-size bed frame includes a sturdy base, side rails, and a headboard. Some frames may also feature additional support, such as a center support beam, to enhance stability. Many frames are compatible with adjustable bases, offering added comfort and versatility for users.