Alko Caravan Single Axle Chassis Ideal For Trailer C/w Jockey Wheel + Legs 6.7m Posted on June 12, 2023 by admin Single axle ALKO Caravan Chassis. Overall length approx 6.7m (21ft, 11in). Length of floor approx 5.6m (18ft, 4inch). Width of floor 208cm. Fitted with new coupling. Original floor still fitted. Unit 15 Whitehall Industrial Park.