McAlpine WC-F21R Flexible WC Connector for back-to-wall installations. Designed to connect a toilet pan to a soil pipe with an inlet diameter of 97-107mm. The flexible design allows for easy installation and adjustment, even in tight spaces. Features a universal outlet suitable for horizontal or vertical installations and compatible with all types of pan connectors. Made from high-quality, durable materials resistant to chemical corrosion. Complies with DIN 1389:2000-05 and LGA certified. The connector is suitable for all 4" (110mm) PVC-U and cast iron soil pipe connections. Independent tests confirm no sediment build-up in the flex. Secured with a worm-drive hose-clip for a reliable connection to the WC pan spigot.