The Atkore Intermediate Spacer (vendor part 1891, Millennium part 526174) is a 4 x 3 in non-corrosive spacer used to separate multiple conduit runs inside a trench or duct bank, keeping proper spacing between ducts as concrete or backfill is placed. Non-conductive PVC construction means it will not interfere with the conduits it separates. Available across a 2 in to 8 in diameter range, it lets crews standardize spacer stock across mixed-size duct bank designs. Millennium also carries matching conduit, couplers and end caps for the same duct bank build.