The file 'Bookcase 3D Printer Model' is (stl) file type, size is 3.1MB.
This is a small part of our last Kickstarter campaign, where you can find complete houses, ruins and many more awesome things. Take a look.
https://www.kickstarter.com/projects/776147335/3d-printable-houses-and-more?ref=discovery_newest&term=3d%20printing