This product is supplied with an additional union of the same colour and width free of charge.Running outlets are used to connect the gutter run to a downpipe. The running outlet should be installed above the gully, using a plumb line in order to determine the correct position, and supported with at least one fascia bracket.For a full demonstration on how this product is joined to a union and other aluminium gutter components, check out our aluminium union jointing tutorial video.