General description The McAlpine WC-EXTB is an adjustable length straight extension piece designed for use with rigid WC connectors in plumbing systems. It is commonly used to extend the length of a rigid WC connector to ensure a secure and watertight connection between the toilet bowl and the soil pipe. Its high-quality construction and easy installation make it a popular choice for both professional plumbers and DIY enthusiasts alike. Technical specifications Material: Polypropylene Available for 3.5"/90mm and 4"/110mm PVC-U and cast iron soil pipe diameters (internal) Compatible with all McAlpine Rigid and MACFIT WC Connectors with 4"/110mm outlets Adjustable Length Installation Follow the manufacturer's instructions carefully for a proper fit and watertight seal. May involve cutting the extension piece to the required length. Use solvent weld adhesive to join the components together. Secure the connection with suitable fixings.