Prefinished kitchen cabinet, Pax, or Besta doors from Ikea could be an inexpensive solution and can be hung using either a French Wood cleat or a Hangman Hanging Device
https://hangmanproducts.com/collections/hanging-solutions/products/apartment-hanger?variant=341108027
https://www.ikea.com/us/en/cat/doors-drawer-fronts-12152/
Besta Finish Door Options.
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