Macdee 1 Piece Oblong Cistern Syphon.
Available in 7 1/2" and 9" tall.
6/7/9 flush volume selector.
Supplied with syphon back nut, flush pipe coupling nut, siphon seal and low level flush pipe seal.
For internal overflow measure from base of cistern to waterline and add 1 inch, ensure that this measurement is a minimum of 10mm below any aperture in the cistern.