Petersen Replacement Insulated Access Door 100-0903

Keep your Petersen Super Pete concrete waterer operating efficiently with the Insulated Access Door (Part #100‑0903). Made from rigid, insulated polyethylene, this door fits models 50, 74H, 120H, 144, 150C, 225, 250, 300, 400, 450, and 500 (including select valve-end versions), helping maintain internal water temperature and reducing freezing risk. It’s built for year-round reliability, simple to install, and provides an easy access point for maintenance.