The rest of the comment is limited to the complicated transport of this product and not its use.
Delivered twice (one replacing the other), both delivered malgrès split rather than the packaging is in good condition.
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For me, the delivery method is almost impossible, a real lottery to receive it in good condition, according to the delicacy of the chain of packages.
The first problem is the delivery personnel who do not pay attention at all.
The second problem comes from the product packaging, which is simply that of the supplier (Grohe), which is suitable for service "won" but not at all suitable for a Service "delivery".
The product is as fragile as a piece of plaster BA13 and therefore does not support the distortions or large shocks.
Packaging lack of reinforcement and shock absorption.
Besides occurs may be replaced by two plates BA13 hydro ...