| Division 10 Specialties
Commercial mailboxes and secure parcel delivery systems engineered for multi- family, university, and corporate properties.
Request A QuoteFrom outdoor cluster units to high-tech parcel lockers, Granite State Specialties provides total mail management solutions.
We supply and install USPS-approved Cluster Box Units (CBUs), 4C horizontal mailboxes, and advanced parcel lockers. Our expert team handles everything from layout planning and concrete pad pouring to the precise installation necessary to ensure compliance with strict USPS regulations and ADA accessibility standards.
Whether you are developing a new luxury apartment complex, upgrading a university mailroom, or outfitting a residential subdivision, we deliver secure, weather-resistant solutions that protect tenants’ mail and packages.
Approved Configurations
Freestanding, pedestal- mounted outdoor mailboxes. Highly secure and perfect for residential communities and commercial business parks.
Wall-mounted or recessed units required for all new multi-family construction. Fully USPS approved and ADA compliant.
Secure, oversized compartments designed for modern e-commerce package delivery. Available as standalone smart systems or integrated units.
Traditional indoor mailboxes designed for replacement purposes in older apartment buildings and college dormitories.
Engineered for Defense
Constructed from thick, extruded aluminum with welded seams to prevent prying, vandalism, and harsh New England weather damage.
Architectural-grade powder coating available in multiple colors (Sandstone, Bronze, Black, Dark Bronze) to perfectly match your property aesthetics.
Equipped with USPS-approved master locks and heavy-duty tenant cam locks featuring anti-fish plates to prevent mail theft and tampering.
Our Trusted Partners
We supply and install the nation’s leading USPS-approved mailbox manufacturers, ensuring
your property passes local Postmaster inspections.
Where We Install
The Granite State Advantage
Every installer holds a minimum of 30 hours of OSHA training. Safety and compliance are our absolute top priorities on every active job site we step onto.
We don’t just act as a middleman. We manage the entire lifecycle—from procurement and logistics to final installation—providing you with a single point of accountability.
While we are New England’s trusted installation experts, our robust logistics network allows us to expertly drop- ship specialized products to projects globally.
With a proven track record of success throughout Boston, New Hampshire, and the broader Northeast, we have the experience to get complex jobs done on time and on budget.
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Granite State Specialties is New England’s leading supplier and installer of division 10, 11, and 12 specialty construction products.
Information
Hours
Mon – Fri:
9:00 AM – 5:00 PM
Sat – Sun: Closed
Contact
10 Lane Road
Raymond, NH 03077
(866) 966-9113
info@granitestatespecialties.com
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