Standard size steel galley trays (9" x 13") or long narrow trays (6.5" x 23"). If you have a galley rack and it is missing trays, you need these! They are mostly branded "Challenge Machinery Company" or "Hamilton Manufacturing". available in 3 states and priced accordingly:
• Reconditioned: De-rusted and lightly oiled. Not perfect and not "new" but probably as close to new as they get without being new.
• Used: Clearly these have been used but not rusted or banged up. The kind of patina that shows a shop-life well-lived.
• Rusty: These need work to be put into service. With a good DIY de-rusting soak and cleaning and these will be ready to use.