We have started to notice that some of our 18mm MDF shelves dip slightly for some of our clients that are particularly wide. The Tenso fitting pushes and clicks together. Our plan was to use them at the back, in the middle of a long shelf; it gives it a little more support. If the shelf is over 500mm then add the tenso’s 2 locator pins at the middle back of the shelf. How can this If statement be considering for the shelf hardware so It’s automated? Rather than me having to manually add them?