6D 4C Mailboxes

Fully recessed – front loading mailboxes

Our 6D 4C mailboxes at Postal Supply will provide you with two columns of secure storage for incoming items. You can find two columns of tenant lockers, two parcel lockers, and more combinations that make it easy to fine-tune the setup for your needs. These are 4C mailboxes, so they meet the current USPS delivery standards for mailboxes.

Our reliable 6 High Double Column 4C Mailbox modules have a height of 23-1/4″ and a width of 31-9/16″. The minimum wall depth required for fully recessed 4C mailboxes is 17″. These front loading commercial mailboxes ensure you can supply a workplace with a way to organize mail in one secure area. Businesses and individual employees alike need a way to keep their business mail safe. Browse the USPS-approved vertical mailboxes for sale below to order the materials you need for an effective package delivery system that meets 4C standards.