McAlpine 3.5"/90mm MAC-EXTB is an adjustable length straight extension WC connector designed to extend the distance between a toilet pan and a soil pipe. The adjustable length feature of the extension piece allows it to be adjusted to fit the required length, which means that it can be used in a wide range of installation situations. The extension piece is easy to install and can be fitted quickly without the need for any special tools or equipment. The MACFIT technology used in the McAlpine MAC-EXTB connector makes installation quick and easy. The connector simply pushes into the soil pipe and onto the toilet pan without the need for any tools or additional sealing materials. This helps to save time and effort during installation and ensures a secure and watertight connection. Overall, the McAlpine MAC-EXTB is a reliable and easy-to-install WC connector that can provide a flexible solution to many toilet installation scenarios requiring an adjustable length straight extension. ・