Abstract: A retrofitting canopy assembly includes a housing defining an interior and first and second openings communicating from the interior to the environment and, together, shaped to receive a top portion of a chair frame when slid thereon, washers, a canopy frame, a ratchet part rotationally fixed to the canopy frame, another ratchet part rotationally fixed to the housing, a frame lock within the housing and movable to secure the housing on the chair frame, and a fastener securing the canopy frame to the first and second ratchet parts, the housing, the frame lock, and washers such that, when the housing is placed on the top of the chair frame, the canopy ratchet parts remain rotationally fixed to one other to keep the shade canopy in a given position until a force sufficient to overcome the ratchet is applied to the canopy frame and/or the shade canopy.