The 110mm Underground Bottle Gully Rectangular Lid is generally used to connect waste pipes to the drainage/sewer system it can also be used for rainwater discharge.The advantage over a P trap is that the bottle gully has its own water seal to stop odours...

Cistern Close Coupling Bolts for connecting a cistern to a W.C. pan - Normally the cistern will be bolted to the toilet pan through locating holes inside the toilet cistern.