Roof box sizes explained By the Overlanding.info team · Last checked 19 October 2026 On this pageLitres vs lengthClearance for the boot lidWeight vs roof loadOpening sidesLocks and mounting Litres vs length Clearance for the boot lid Weight vs roof load Opening sides Locks and mounting Related guides and toolsWill a roof tent fit my car?Roof box, roof tent or boot campingWork out your vehicle height Tool More in Roof bars and boxes