An architectural glazed panel comprising a rigid frame 1 with fluoroplastic film 2 shrunk on to the frame so as to be stretched across both faces of the frame. The film may be fluorinated ethylene propylene FEP or ethylene tetrafluoroethylene EFTE. A method of making the panel comprises forming a rigid frame, forming a tubular fluoroplastic film, the width of the tube being smaller than the smallest external planar dimension of the frame. The film is then heated and stretched until the width thereof is sufficient to permit the frame to be inserted into the tube. The tube is cooled while stretched and the frame is inserted into the tube and the tube is heated to shrink the tube whereby it becomes stretched over the frame, and the open end or ends of the tube are sealed. The glazing panel can be used for greenhouses or other such buildings.