Transair 1-1/2" (40mm) Pipe-to-Pipe Connector with vent, Supplied with 1/4" threaded fitting and 8 mm push-in connection, complete with blanking plug - The range of Transair connectors provides versatility of design and helps to overcome constraints often encountered with the structure of industrial buildings. Interchangeable and reusable with a full-bore design and made of non-flammable materials (UL94-HB standard). NOTE: This product can only be purchased in quantities of 5.