This wall mountable box is designed to hold items up to 5" wide, but if folded can be larger. This is an metal 22 gauge box that features an exterior powder coat finish. The box is equipped with an locking front door with a keyed cam lock to secure the inserted items. The overall dimensions of this box are 6 1/2"w x 9"h x 2 1/2" deep. The mounting holes are designed so that the mounting hardware can not be removed unless the lock is unlocked. This box is designed to be used INDOORS since there is nothing to stop water from running in the slot.