Twin bed frames range from 40" to 43" wide by 77" to 80" long and are the right choice for kids' rooms, bunk setups, shared bedrooms, and single sleeper spaces where floor space matters as much as the bed itself. Compact enough to leave room for everything else a smaller bedroom needs, many twin bed frames also include under-bed storage to make the most of a limited footprint. Shop our twin bed frame collection across a wide range of designs and price points.