For safe roof transportation of loads up to 6 metres long. The modular system allows you to create your own safe carrier solution for longer and bulkier loads. An excellent complement to the Thule conduit box 3171 if you want to carry pipes over three metres long or with larger diameters. This safety accessory is easy to fit and made from a durable and protective polymer. City Crash tested and approved due to the built-in crash plate behind the plastic shield. Two special ratchet tie downs for the Thule side profiles 322 are included to secure the load. Needs to be supplemented with one or several Thule side profiles 322 to adjust to your car/load length.