The Low Pro Heavy Duty (LP HD) trailer models from Felling Trailers, Sauk Centre, Minn., are designed for wideset heavy construction equipment like mid-size crawler excavators and dozers. The models can accommodate equipment that has an 8 to 8.5 ft. wide track gauge (center to center of tracks). The trailers are constructed with a 10-in. structural channel full-length side rail (flanges out). The series consist of two models, the FT-50-3 LP HD triple axle 25-ton and the FT-60-4 LP HD quad axle 30-ton. Different deck lengths are available.