RMC Plastics’ Duct End Bells are made of ABS material with extra wall thickness for superior strength and longevity. Our 2”, 3”, & 4” End Bells fit over conduit in concrete vault walls to provide a smooth entrance to the conduit. The face of our End Bells has a rolled edge for ease, protection and reduced frictional drag when pulling in the conductors. When properly cemented to the duct pipe, RMC’s Duct End Bells insure a lasting moisture-proof installation with rolled resting edge for the cables.