Back to wall pan flush pipe size

[Cenci]

Hi there
Just picked up a cheap concealed cistern that originally came from bathstore. It has a 44mm flush pipe with a finned seal that goes into the hole in the back to wall pan

My question is, can I buy any back to wall pan off fleabay I.e. are the flush hole inlets on pans standard sizes or do I have to buy a specific bathstore pan to match the concealed cistern pipe and washer.

Sorry if this is a basic question but I have never fitted a back to wall pan before

Cheers

 

[longdogs]

Not a hundred per cent sure on this question but would think that the size is standard. Whenever I've had to replace a seal it's always been a standard one from a plumber's merchant. If buying on fleabay, you could always ask the seller the question first before putting in a bid.

 

[CBF]

stardard size