I have a a 3867 and the door will not open. It has new batteries and we have beat on it with a rubber mallet. which is what worked for most of the people but ours will not open no matter what,

From the Sentry Safe web site:


In order for Sentry Group to release a combination for any safe, we require a notarized request, stating that you are the owner of the safe (the last name of the notary public must be different than that of the safe owner). Please indicate how you'd like to receive your combination.Options include first class mail, e-mail or fax.Your letter must clearly indicate which method you are choosing to receive your combination, as well as the mailing address, e-mail address,or fax number to which it should be sent.Note that failure to indicate the method in which your combination should be returned to you will result in delays to the process.Please include the model number, serial number, and a $20 check or money order (please do not mail your credit card number), your address and telephone number.

Your request may be mailed to us at:
Sentry Group
Attn: Dept. 200 882 Linden Avenue
Rochester, NY 14625-2784
Please allow 7-10 business days, upon receipt of your request, to receive your combination.

This request may be faxed to us at : 585-381-2940.

The combination will be faxed or e-mailed back to you only if requested to do so on your correspondence and you have included a copy of a $20* money order on your fax (please allow 24 hours for processing your faxed request).

To pay by MasterCard or Visa please contact our Customer Service Department at 1-800-828-1438 (please do not fax your credit card number).


* Prices subject to change