Shop for Hardware at The Home Depot. The Mailsafe Locking Wall Mount Mailbox is made from heavy-duty steel and plastic for a durable impact and rust resistant construction. The mailbox has an extra large capacity providing plenty of space to hold various types of mail and high volume mail deliveries. For added security and theft prevention, the mailbox features an incoming mail slot concealed by an aluminum flap and a locking outgoing mail compartment with a cam lock. The unit includes an aluminum mail indicator flag, 2 lock keys, mounting hardware, and instructions for easy installation. The brushed coated finish adds an attractive look to any residence.