a 72-in H x 48-in W x 24-in D Freestanding Shelving Unit (or close to it measurements) bought from lowes. Cubes reused from older cages. Front is cubes welded together for a solid piece and hinged to make easy access and easy cleaning. Coroplast insides and aspen shavings/carefresh litter. My pigs love it!
Shelving unit cost $90 at lowes and then about $15 for the hinges and clips. $19 a sheet for coroplast.