The Adir Corp Multi Purpose Large Size Suggestion Box can be used in any office as a mail collection box for all outgoing or incoming mail. It can also be used to keep private office correspondence confidential, allowing your employees or customers to voice their greatest concerns while remaining anonymous. Constructed of durable, heavy-gauge steel, the mailbox is designed to last you well into the future. It also features a scratch-resistant finish to stand up against everyday wear and tear, providing long-term durability and use for years to come. Serving a variety of needs, this drop box will be a convenient addition for retail stores, rental facilities, customer service counters, manufacturing plants, auto dealers and other facilities. The drop slot measures 10" x 0.31" deep, and can accept checks, keys, suggestion cards, envelopes or other materials dropped off after hours. A full piano hinged door with a durable lock ensures the items inside are safe and secure. Meanwhile, two keys are included for easy access and entry inside to remove items and make room for additional material. Finally, this multi-purpose box is equipped with pre-drilled holes and comes complete with screws for quick and easy installation on any wall or door.