The McAlpine DC1-GR-BO is a grey 4"/110mm drain connector with a 1½" universal boss, designed for use with 4"/110mm diameter pipes manufactured to BS 4514. Its O-seal socket helps provide a watertight connection, while the finned seal spigot supports internal connections to cast iron, plastic or clay pipework. The connector includes a blanking cap for sealing the boss connection when required. Made from polypropylene, it is suitable for low-level domestic and commercial drainage applications. It should only be fitted on the ground floor because the boss reduces the internal outlet diameter. Supplied as one item with a 1-year warranty. Grey polypropylene construction for a durable drainage connection. Designed for low-level, ground-floor drainage connections. Finned seal spigot supports internal connections to 4"/110mm cast iron, plastic or clay pipes. Includes a blanking cap to seal the boss connection when required. For ground-floor installation only, due to the boss reducing the internal outlet diameter. Manufactured from polypropylene for a durable, long-lasting connection. The O-seal socket helps create a watertight connection to 4"/110mm pipes. Includes a 1½" universal vent boss for connecting to waste or soil pipework.