That depends on your affiliation with UNLV:
UNLV undergraduates may check out up to 50 books at one time, with a 3 week checkout and four renewals (typically)
UNLV graduate students and faculty may check out an unlimited number of books for a semester long checkout with 2 renewals (some limitations and restrictions apply).
Current dues paying members of the Alumni Association, members of the Executive Board of the UNLV Library Society, and students registered for correspondence courses through the UNR Division of Continuing Education may borrow up to twenty items.
CSN and Other NSHE students and staff (NSC, UNR): may check out up to 50 books at one time, with a 3 week checkout and four renewals (typically)
Public borrowers are limited to a maximum of ten books checked out a time.
For more information, click the link below.