41 in. H x 16 3/4 in. W - Parcel Locker - 2 PL5's - Aluminum - Rear Loading 4C Horizontal MailboxSalsbury 3700 Series 4C Horizontal Mailboxes Rear Loading USPS Access. Constructed of heavy duty aluminum and stainless steel hardware. Feature a durable powder coated finish. 2 Stand alone parcel lockers PL5's. Outgoing mail compartment includes the USPS master lock access door lock installed by the USPS and cannot be used for mail distribution. Include factory installed 3 4 in. W x 1 4 in. D trim and 1 or 2 heavy duty rear access doors with latches