It's a Honeywell safe box Model # AX784171. It's a gray box that looks like it's made of rubber maid material. It also has the numbers 00906 on it

contact honeywell was my first thought.

i typed "replacement honeywell safe keys" in google and:

http://www.honeywellsafes.com/UserFiles/...

It's a Honeywell safe box Model # AX784171. It's a gray box that looks like it's made of rubber maid material. It also has the numbers 00906 on it