To help you choose which mounts are the best for you we have put together this quick guide
Corner mounts are the most popular. These mounts can cope with a slightly curved roof. They protrude out around 60mm in each direction. With one on each corner, the overall panel footprint increases by 120mm. They are 150mm square.
Long end mounts are the same ABS plastic but are designed to be used on flat surfaces. They have a good advantage when used correctly to deflect the wind.
The 3rd and less commonly used are available on request. These are the aluminium L mounts. They require more work to fit but are useful with ribbed van roofs. Please let us know the measurements of your roof profile and we can help with specifying the correct mounts.