A modular sofa sleeper comprises a sofa frame, a pivotal backrest assembly and a bed mechanism which be assembled and disassembled without tools. Each of these components may be shipped separately in boxes. The sofa frame may be shipped as multiple components which may be assembled or disassembled without tools. The sofa frame has at least one stop which limits rotation of the pivotal backrest assembly from its lowered position to its raised position. The bed mechanism is movable between an extended position for the sofa sleeper to function as a bed and a collapsed position for the sofa sleeper to function as a sofa.

A modular sofa sleeper comprises a sofa frame, a pivotal backrest assembly and a bed mechanism which be assembled and disassembled without tools. Each of these components may be shipped separately in boxes. The sofa frame may be shipped as multiple components which may be assembled or disassembled without tools. The sofa frame has at least one stop which limits rotation of the pivotal backrest assembly from its lowered position to its raised position. The bed mechanism is movable between an extended position for the sofa sleeper to function as a bed and a collapsed position for the sofa sleeper to function as a sofa.