IWS AutoDrain Run-to-Waste SystemsRemove Run Off the Easy Way with an IWS AutoDrain Take the strain out of water drain with the IWS AutoDrain. Its simple and effective, and saves you lots of time and effort. Removes excess run off much easier than emptying saucers Choose from standard (13mm internal) or pro (25mm internal) flexi pipe Different tray sizes available: standard or large Saves lots of time and effort great for larger rooms Can be upgraded to include dripper functionality