Grohe Toilet Connection Kit - Ref 37311K00 | Built-in WC

Hi, it's Stan!
Grohe frame-side connecting sleeves with drain seal , reference 37311K00 for built-in cisterns, connect the support frame to the bowl. They will need to be cut to the correct length.

The bowl-side gaskets are supplied, as well as the drain gasket on the support frame side. I recommend that you also purchase the injection gasket on the support frame side. By replacing this other gasket, you can be sure that the connecting pipes are watertight when reinstalling the bowl.

These cuffs come with plastic nut/centering device and nut covers.

What you can also use is Geberit lubricant to apply to the inside of the joints on the frame-support side. This prevents the toilet from being pushed violently against the wall during installation.

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Do you have any doubts about compatibility?
Identify your Grohe tank , you will find only the parts specific to your tank, including the seals.
It takes 2 minutes.