MLM Economy Van Ramps These economy van ramps have a serrated deck surface for sure footing. An optional perforated surface is also available. The ends are cut off-not rounded. Side rails are 4 1/2" high. The perfect ramp if you are unloading and have minimal use requirements. Other sizes available. FOB-Shipping Point. There is a special high angle bump at the bottom of the ramp This makes the first 10" a slightly steeper slope and allows the ramp to go down lower than standard models. Straight ramps are available for easy access when loading heavy objects onto trailers.