Caroflow Balcony Spigot outlets are designed to allow the unit to be installed against a wall/upstand and the grating, which can be cut on site or prior to delivery, will allow various sizes of pipework to drain into the outlet from upper levels to give a continuous drainage line from top to bottom storey. Caroflow Balcony outlets are available in three sizes; 50mm, 75mm and 100mm and are suitable for connection to, PVC (50/BO will not connect directly), Aluminium, Cast Iron and Copper (Gunmetal only).