You can rent a book locker online for 400 NOK + fee per school year. If you place the order by using a computer, you have the option to choose which locker you want. This option is not available if you are using a tablet, smartphone etc. It is not possible to change lockers after the transaction has been made.
Your locker number will be sent to you within 1-2 days.
The rental period expires on 1 August the following year. The locker needs to be empty by this date.