Shade for building openings

A screened panel spans at least a portion of an opening of a building in order to shade occupants thereat. The panel has hems on all sides that overlap at the corners whereat grommets are located. Tensioning members attach at least two of the corners in order to provide a tight fit of the panel within the opening, the tensioning members being turnbuckles with carabiners on the distal ends thereof. Spring-locks are used to prevent rotation of the turnbuckles once the appropriate tension is achieved. Reinforcement bars within the upper and lower hems and a strong flexible webbing within the side hems provide for a strong panel periphery which adds rigidity and stability to the overall panel.