Hi I need a new toilet siphon but am unsure as to what the measurement of
241mm measures. Is it the height or the width?
http://www.screwfix.com/app/sfd/cat/...9890&id=71497#

http://www.screwfix.com/sfd/i/cat/64/p2634964_x.jpg
My toilet is about 16 years old with an external overflow.

Thanks Ron