This part is listed as part of the casing section. The casing is the external shell of the heating unit. The casing will vary depending on the appliance in question. The various casing models have changed substantially over the years, each supplier has the ultimate goal of making the appliances as user friendly as possible.
Fits multiple appliances
Technical specification
Toilet Cistern CapacityFTW--Supplier Part Number124870Brand NameVaillant