A king-size bed frame is designed to support a king-size mattress, which typically measures 76 inches wide by 80 inches long. This type of bed frame 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. These frames often include features such as sturdy slats for mattress support, headboards for added comfort, and sometimes storage options underneath. When choosing a king-size bed frame, it's essential to consider the overall size of the bedroom and the desired style to ensure a harmonious fit with other furnishings.