Circular Boxes in a variety of configurations manufactured from PVC to comply with BS4607 Push fit conduit entry ensures a tight reliable fit Lids available separately; white, stock no. 600-521; black, stock no. 601-805 Two brass M4 inserts are fitted (F.C. 50·8) for lid fixing For suitable lid screws see stock no. 482-8650 typically Using PVC adhesive stock no. 600-442, will give a strong permanent welded joint