Installing the extension is quick of hand and is self-explanatory, so it does not bother even that came with no instructions. The workmanship is neat, thanks to the deep drawers for expanding the grid to shake with a total extension bombproof and not so readily.
Exemplary I found the included in the delivery of a new set of pads, plastic spigot, screws and dowels. So you can the grid, even if it was previously installed in another location, anchor optimally again. And who can not reach with an expansion of seven centimeters to one side, which can be extended to the other side again by seven centimeters - which may be called flexible.
No criticism, so full star.