Crouse-Hinds Red Lens Filter for FCB (Part #HL-5844)

Looking to purchase (2) two Crouse-Hinds Red Lens Filters (Part# #HL-5844) for a FCB Flashing Red Beacon (cat. # 41257G). This Beacon is used to mark obstructions for aircraft. They are typically found on towers, chimneys and buildings over 200 feet and taller. These lenses, or globes, fit inside the "300 type" beacon. They are shaped like an hourglass open at the top and bottom. Generally, the part number (HL-5844) will be etched onto the lip of the glass on the larger opening. Thanks!