Hello, and thank you for choosing JA for your support needs. Happy to assist you with this request.
You are looking for the:
LT300CL Optional Lower Paper Tray (500-sheet capacity)
It holds both Legal and Letter and can be purchased Online for $183.28 from Walmart. The link is below:
Please let me know if there is anything else that you need.
One final thing, Sir or Madam. Walmart had the best price for the Tray and many stores have it locally vs online only.