This Levelling Ramps with shorter length designed to suit dual axle caravans in heavy duty applications. Incorrect water drainage in sinks and showers, malfunctioning of 3-way fridges and items rolling off surfaces. These are some potential issues if your caravan is not levelled correctly. Avoid these inconveniences by simply levelling your RV with easy-to-use heavy-duty levelling ramps. Dual Axle Leveling Ramp Set