Brio USA, Inc. introduces the Brio Weatherfold 4s, an architectural hardware system for top hung exterior folding doors. There are four systems in the series with the following panel weight capacities: the Weatherfold 4s 50 - 110 lbs.; Weatherfold 4s 75 - 165 lbs.; Weatherfold 4s 100 - 220lbs; and the Weatherfold 4s 150 - 330lbs. Up to 8 equal size panels can fold seamlessly in each direction with inward or outward opening functionality. Brio Weatherfold 4s includes pivot sets, hanger sets, hinge sets, top track, bottom channel, seals, locking and flush bolt options and is suitable for aluminum, wood and PVC panels - inward or outward opening. It spans up to 13’1” high and 64’3” wide and can accommodate up to 8 equal size panels folding in each direction.