Different items have different check out periods, but will basically fall in to the following categories*:
Reserves = varies from 3 hours to 1 week
DVDs = 1 week
Regular Undergraduate = 30 days
Regular Graduate = 45 days
Regular Faculty/Staff = 90 days
*all check outs, except reserves, are renewable for an additional period as long as there is no hold for the item at the time of renewal.