Al Fresco is available in two weight options, 45kg for general residential and 75 kg for larger or double- glazed applications. 5 Wheel Precision Hanger5 The wheels are grooved to run on convex rails within the track: this is the optimum design for hangers subjected to side loads. Resistance to movement is further reduced on Al Fresco 75 by the introduction of 5 high speed precision bearings, 4 taking the vertical forces with the fifth opposing the side load.