This container (part number 964-05104) is for lawn tractor bagger attachments.
Container 964-05104 collects and holds the grass clippings that blow from below the mower deck.
Follow the instructions in your owner's manual when installing this part.
964-05104 (or 964-04096A)
The manufacturer substituted part 964-04096A with this new part 964-05104
Lawn & Garden/Yard/Farm