Our back inlet bottle gully can be inserted into an existing drain run to enable additional connections to be made.The most common application for this fitting is alongside the external wall of the house, taking waste pipes from the kitchen into the foul drain.The waste pipes should always terminate below the grid, which can be cut to accommodate the waste pipes.Our back inlet gully is trapped to prevent drain smells from escaping, and is roddable via a removable central chamber.Please watch our overview video below