The Library Annex is a high-density storage facility for low-use library materials. The transfer of such materials to the Library Annex increases the space available for users in the main campus library buildings and provides conservation-level environmental controls for books and journals, archives and manuscripts, and rare and fragile materials. All materials in the Library Annex are represented in the Library catalog and may be requested for use. The Library Annex is located on KU’s west campus and designed on the Harvard model. The first module of the Library Annex opened in July, 2006 with the capacity to store 1.6 million book volumes. A second module opened in October, 2012 with the capacity to store another 1.6 million book volumes. In March, 2014 a film module was added with the capacity to hold 15,000 reels of film.