Displays2go Donation Box, Metal, Slim Profile, Locking, Holder for 8.5 x 11 Sign, Hardware Included (Black Metal) (MSBCT8511B) Donation box for charities and churches is made of durable metal Available in a black or silver finish. Features a built-in lock and comes with a key for security. Slim profile with only 3.3" depth. Top insert slot can accept almost all sized envelopes or papers including #10 envelopes. Comes with an optionally removable sign holder, for an 8.5" x 11" printed paper Displays2go SKU#: MSBCT8511B