The file 'Lower Vent Cover 3D Printer Model' is (stl) file type, size is 1.3KB.
Covers for the lower rectangular vents on the Space Marine backpack. Pepakura files found at http://www.therpf.com/f79/jfcustoms-foam-files-im-not-starwars-thread-please-get-me-back-home-148889/