What is the difference between this model and the model cat ref 8121f
Good afternoon Yop1... I can confirm that the 8" S7 Cascade Syphon has a internal overflow. With regards to the difference the Cascade 7510F is a 8" Syphon and the Cascade 8121F is a 9" Syphon... there was a misprint on the website which was a mistake of Thomas Dudley Ltd and not Screwfix... Thank you once again for choosing Thomas Dudley as your choice of Syphons and thank you for bringing the above to our attention... As always if you have any further questions please feel free to let us know... Happy plumbing and kind regards, Chris Marsh - Thomas Dudley Ltd.
Answered by: Dudley Sales TDL
Date published: 2020-05-23