For the suspension of regular ductwork or similar services in an outdoor stationary setting. Replaces use of hanger strap for suspension of rectangular Duckwork. Works in conjunctions with Gripple's No. 2 and No. 3 UniGrips Fastener (i.e. UniGrip Fastener and length of cable with preattached end fixing). Trapezze Bracket attach easily to each side of the ductwork with 3/4" #10 self-drilling screws at four points