Standard roof rails are produced with a hook one end to fit into a roof rail bracket attached to the caravan. The other end has a hole so as to fit over the spike of an upright pole, roof rails can also be produced with a hook both ends, or a hook one end and a spike the other end. The spike can be plain or threaded, straight or bent over. Roof rails can be produced with slight bow in them, or a bow of 132' for pop-top caravans this bow can be in the center or towards one end.

The standard maximum lengths are: -
>> 121cm - 2Pce
>> 182cm - 2Pce
>> 243cm - 2Pce
>> 274cm - 2Pce
>> 305cm - 2Pce or 3Pce
>> 335cm - 3Pce
>> 365cm - 2Pce or 3Pce
>> 457cm - 3Pce

Roof rails are manufactured using a combination of four diameters of tube: i.e.
>> 19mm - 16mm
>> 22.2mm - 19mm
>> 25.4mm - 22.2mm.
All roof rails can be produced in 25.4mm square tube, other sizes and combinations can be manufactured on request.