Question about Siemens Wz20400

No, according to the manual from the WT7HXE90CH dryer, page 20, it should be the WZ27400 worktop. According to another Siemens website: The connection kits are always dryer dependent and fit all our Siemens front loading washing machines except our slimline models with shallow depth and washing machines with a glass worktop.
Another question, have you ever looked at the WM6HXE90CH iQ800 washing machine? It's available at a good price as a set with the same dryer.

Fits perfectly - like a glove