Abstract: An improved umbrella frame comprising a four-rib canopy frame comprising only five parts plus a simplified four-panel canopy that greatly reduces manufacturing costs. The frame comprises four arms that snap together with a tool-less tongue and groove connection around a central shaft, allowing the four-panel canopy to be stretched over top. The tongue and groove assembly forms an improved runner that gently slides up and down the central shaft to provide open and close functions. The improved umbrella frame is lightweight and may-be quickly and easily assembled and disassembled for packing or storage.