4C Mailboxes
Front/Rear Loading Mailboxes
Cluster Mailboxes
Collection Boxes

More Postal Specialties:

  • 4C Mailbox Styles
  • Collection Boxes
  • Cluster Mailboxes
  • Front/Rear Loading Mailboxes
  • Replacement Mailboxes
  • Mail Drop Boxes
  • Mail Directories
  • Key Cabinets
  • Outdoor Parcel Lockers
  • Mini Storage Cabinets


What we offer

Granite State Specialties  Supplies & Installs all types and brands of Postal Specialties such as 4C Mailboxes, Rear Loading Mail Boxes, Mail Drop Boxes, Collection Boxes, Book Drops and Mail Directories for both Indoor and Outdoor Applications. Our skilled OSHA trained Installers can install both union and non-union jobs in Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, New Jersey and anywhere else in the United States. We can also drop ship anywhere in the world.

Granite State Specialties is a supplier of all major brands such as Auth Florence Mailboxes, Salsbury Industries, Bommer and all others.