Oasis Locking Mailbox - Pearl Gray USPS approved locking curbside mailbox Large capacity lcoking mailbox designed for large volumes of mail and small packages Made of durable 14 gauge and 16 gauge steel All instructions, hardware, and 2 keys are included. Only you hold the key; not the mail carrier. Mailbox Measurements: 13.5" W x 18.5" L x 20" H