Chassis - HM chassis are made from 55 grade (structural) rectangular hollow section. This gives greater strength and does not allow a build up of material on ledges. Running Gear - HU 4/5/6 are single axle, ag spec, unless high speed is requested. HU 8/10 are twin axles with suspension.
Buck - Single piece floor sheet, overlaid on cross ribbed box section. When lowered, the tipping buck sits on a rubber block which provides a cushioning to the shock being transmitted from the chassis to the buck.
Side Panels - HM utility trailers have the side panels folded horizontally to strenghten them.
Drop Sides (DS) - The sides, posts and tailgate on HM utility trailers are removable leaving a flat trailer for alternative use. An extension is available to increase the floor length.