The Atkore PVC Duct (vendor part 7516, Millennium part 524479) is a 4 in x 20 ft direct-burial section with a belled end, sized for fiber and power duct bank builds where crews need long joint-free runs between handholes. The belled end lets installers cement a plain-end section directly on-site without a separate coupler, speeding up trenching crews' production. Non-corrosive PVC resists the soil chemistry and groundwater exposure typical of buried infrastructure. Stock it with matching couplers, end bells and primer/cement for a complete duct bank package from Millennium.