A new development by IDS features the introduction of ductile iron frames to our range. Ductile iron is widely used within civil engineering and provides a strong, robust and aesthetically pleasing finish to the chambers. An important feature of this frame is the flange which is specifically engineered to accommodate better adhesion and keying in qualities to the concrete surround. All frames are complete with a locking facility and are clearly marked with the component reference for easy specification and ordering.