Daybar manufactures hollow metal doors and frames from a Brampton head office and plant, with a second Canadian facility at Airdrie, Alberta and a quick-ship depot in Mississauga. Its fire-rated line covers the Delta, Embossed, MaxDoor and LS20 door series and the AS, DW16, CBO and EF frame series, with steel openings rated to three hours. The firm displays the Warnock Hersey mark and publishes a codes and standards page listing conformance to CAN4 S104, UL 10B, UL 10C, ASTM E2074, NFPA 80 and NFPA 252. It describes itself as North America’s largest independently owned steel door and frame manufacturer.