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Unistrut Flat Adjustable Plate 3 Hole allows the user to be able to perform a variety of functions with their Unistrut channel. The plate is mainly used to connect two struts together but also allows a channel to be mounted at a minimum 45 degree angle. They are safe and easy to install with minimum tools required. The channels are hot-dip galvanized forming a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the delicate core.