SMC's and Combinations-Postal Services - Carnegie Mellon University

Forgot your SMC Combination?!!

Click here to find your SMC and combination.

How to Open Your Mailbox:

1) Turn the dial counter clockwise, passing zero at least three times. Stop at your first number.

2) Turn the dial clockwise, passing your first number once. Stop at your second number.

3) Turn the dial counter clockwise. Stop at your third number.

4) Turn the dial clockwise as far as possible and pull to open the mailbox door.

** If you have any questions or problems, please let us know at the package pick up door.