Available only in Quebec & Maritimes. JBM's Heavy-duty Rectangular Skid Feeder, mig-welded for additional strength, keeps your hay up off the ground. Widths: 5', 6' or 7'; Lengths: 8', 12', 16' or 20'. Available only in Quebec & Maritimes. JBM's Heavy-duty Rectangular Skid Feeder, mig-welded for additional strength, keeps your hay up off the ground. Widths: 5', 6' or 7'; Lengths: 8', 12', 16' or 20'.