Est. 1966 · The Original Mail Sorter Company
In 1966, HAMILTON built the sort module that started an industry. Six decades later, we still design and manufacture every mail sorter, console, and shelf insert in our own Ohio factory — fully modular, available in 25+ finishes, and backed by a lifetime warranty.
Our Heritage
HAMILTON's story starts in 1966 in Fairfield, Ohio, with a single invention: a sort module component designed to ease the workflow of a corporate mailroom. It was a simple idea — adjustable, indexed shelving that let a mailroom clerk route hundreds of pieces of mail a day without losing track of a single one — but it was good enough to become a category of its own.
For the next five decades, the company built its entire name and reputation around that one product line. As Hamilton Sorter, Co., Inc., it became the manufacturer of record behind mailrooms in some of the largest corporations, universities, and government facilities in the country — engineering consoles, sort modules, bulk sort units, and executive mail stations that got specified into construction documents under CSI Section 12511, Mailroom Furniture.
That heritage is still written into the paperwork. The mailroom furniture specification architects reference today still lists the "Acceptable Manufacturer" as Hamilton Sorter, Co., Inc. — a direct line from the current company back to the 1966 invention that started it.
In 2019, as the product line grew well beyond the mailroom — into lockers, laboratory casework, healthcare furniture, and workplace storage — the company took the name Hamilton Casework Solutions to reflect everything it had become. But the mail sorter never left the catalog. It's still designed and built on the same Fairfield, Ohio factory floor, under the same lifetime warranty, by a team that has been solving mailroom workflow problems for longer than most of its competitors have existed.
Founded in Fairfield, Ohio. Invents the sort module — the component that becomes the foundation of the modern mail sorter.
Operating as Hamilton Sorter, Co., Inc., the company becomes a leading U.S. manufacturer of mailroom furniture, specified under CSI Section 12511 for corporate, university, and government mailrooms nationwide.
Rebrands as Hamilton Casework Solutions as the product line expands into lockers, laboratory, healthcare, and workplace casework.
Same Fairfield, Ohio factory. Mail sorters remain a core, actively engineered product line — still built on the modular platform the company invented in 1966.
Product Basics
A mail sorter is a modular system of components — not a single fixed product. HAMILTON mailrooms are built from six core building blocks, mixed and matched to fit the volume, workflow, and space of any facility.
One to six sections wide, 18" to 48" high, locking to the aluminum console frame. Hold adjustable, indexed shelves in 1" vertical increments — the core sorting mechanism of any mail sorter.
The base unit. Ergonomically designed with a clear anodized-aluminum frame, 24" to 84" wide, 24" to 36" deep, and 30" or 36" tall. Available with half- or full-depth shelves and sliding doors.
Available in Standard, Legal, and Oversize widths with full-width, color-coded index label channels. Plastic shelves hold up to 35 lbs.; laminate wood shelves hold up to 50 lbs.
A stand-alone version of the sort module, three or four sections wide and 48" to 76" high, with optional bottom storage or a slide-out reference shelf — no console required.
Flat or 25°-angled shelving sized to hold mail tubs, for packages and bulk mail too large for standard sort shelving. Available as desktop or freestanding units.
Platforms raise sort modules for extra worksurface and machine clearance. Dump rims contain loose mail during sorting; task lights, tackboards, and indexing templates round out the workstation.
For Architects & Designers
Mail sorters are one of the oldest continuously active CSI MasterFormat sections in HAMILTON's catalog. The specification below reflects the actual configuration codes and dimensions used to write mailroom furniture into construction documents today.
Console Configuration Types
| Code | Configuration | Description |
|---|---|---|
| CT | Basic Console | Open frame, no shelf or door |
| CH | Half-Shelf Console | Includes a 12", 15", or 18" deep half-shelf |
| CS | Full-Shelf Console | Includes a 12", 30", or 36" deep full shelf |
| CC | Cabinet Console | Full shelf plus sliding doors |
| CX | Center-Mounted Modesty | Reinforced center modesty panel for added load support |
| MAN | Manifest Shipping Console | Cabinet console with five grommets and an articulating keyboard tray |
| CTwwddADJ / ELE | Crank / Electric Adjustable | Work surface height adjusts 24"–36", rated to 125 lbs. |
| SU | Adjustable Scale Console | 6" drop-down 24"x30" work surface for scale placement |
| CR | Console with Rollers | Fitted with 22" steel ball-bearing rollers |
Sorting Shelf Sizes
| Size | Dimensions | Typical Use | Capacity |
|---|---|---|---|
| Standard | 10-13/16" x 11-3/4" deep | Letter-size mail, forms, literature | 35 lbs. (plastic) / 50 lbs. (laminate) |
| Legal | 10-13/16" x 15-7/8" deep | Legal-size documents, spreadsheets | 35 lbs. (plastic) / 50 lbs. (laminate) |
| Oversize | 12-13/16" x 15-7/8" deep | Overnight envelopes, printouts, newspapers | 35 lbs. (plastic) / 50 lbs. (laminate) |
Shelves adjust in 1" vertical increments on injection-molded PVC shelf supports. Index strips are available in 10 standard colors for department or floor routing.
62-page guide covering every sort module, console, freestanding unit, and accessory — with model nomenclature, dimensions, and finish availability.
Download the Spec Guide →Editable three-part specification for Mailroom Furniture — general, products, and execution — ready to drop into a project manual.
Request the CSI Spec →25+ standard laminate finishes and 20 hardware pull styles, mix-and-match across doors, cases, and shelves.
Request Finish Samples →Design-Forward Mailrooms
Mailrooms have moved out of the basement. In hotels, corporate headquarters, and university buildings alike, the mail sorter is increasingly installed in high-traffic, client-facing space — which means it has to look like it belongs there.
HAMILTON mail sorters are available in more than 25 standard laminate finishes plus custom colors, with mix-and-match doors and cases, 20 hardware pull styles, and optional glass or acrylic fronts. Sort modules can be color-matched to adjacent reception desks, millwork, and casework so the mailroom reads as designed furniture — not industrial shelving that got bolted on as an afterthought.
Featured Deployment
When Sun Communities relocated its corporate mailroom to a high-visibility spot adjacent to reception, the room could no longer look like a back-of-house afterthought. Positioned in prime real estate, it needed to mirror the aesthetic and material standards already established throughout the rest of the building — despite handling high daily mail traffic.
"Sun Communities follows the latest interior design trends, with quality products and a top-notch environment. This mailroom was not going to be anything less, despite the high traffic."
Sun Communities Project TeamHAMILTON matched sort module and console finishes to the building's existing interior palette, proving that a fully functional, high-volume mail sorter and a reception-adjacent design statement aren't mutually exclusive.
Talk to a Mailroom Specialist
Frequently Asked Questions
A mail sorter is a modular piece of mailroom furniture — typically built from a console base and one or more sort modules — used to organize, distribute, and process incoming and outgoing mail. Sort modules contain adjustable shelves in standard, legal, or oversize widths, each fitted with a label channel so mail can be routed to a department, floor, or individual. Mail sorters range from a single desktop console to floor-to-ceiling banks covering an entire mailroom wall, and can include consoles, platforms, dump rims, bulk sort units, and freestanding modules depending on mail volume and workflow.
HAMILTON mail sorter shelves come in three standard sizes: Standard (10-13/16" x 11-3/4" deep) for letter-size mail, forms, and literature; Legal (10-13/16" x 15-7/8" deep) for legal-size documents and spreadsheets; and Oversize (12-13/16" x 15-7/8" deep) for overnight envelopes, computer printouts, and newspapers. Plastic shelves are rated to hold 35 lbs.; laminate wood shelves are rated to hold 50 lbs. All shelf sizes adjust in 1-inch vertical increments within the sort module frame.
Yes. Hamilton Sorter, Co., Inc. was founded in 1966 in Fairfield, Ohio, and built its entire business and reputation on mail sorter design and manufacturing. In 2019, the company took the name Hamilton Casework Solutions to reflect an expanded product line that now includes lockers, laboratory casework, healthcare furniture, and workplace storage — but mail sorters are still designed and manufactured at the same Fairfield, Ohio facility. The CSI Section 12511 specification for mailroom furniture still lists Hamilton Sorter, Co., Inc. as the manufacturer of record, a direct link to the company's origin.
Mail sorter consoles are available in 30" and 36" heights, and sort modules mount on top of, or independent of, the console base — which gives architects and facility planners control over where the lowest and highest sorting shelf falls relative to the floor. To keep operable shelf openings within the ADA reach range of 15"–48" AFF (2010 ADA Standards §308), specify a lower console height, a platform riser, or a reduced-height module stack for any bank intended for accessible use. HAMILTON's project team can review a mailroom layout for accessibility before it goes to construction documents.
A console is the base unit of a mail sorter — an aluminum-framed worksurface, available 24" to 84" wide, 24" to 36" deep, and 30" or 36" tall, with optional half-shelf, full-shelf, cabinet, or drawer configurations underneath. A sort module is the shelving unit that locks on top of the console (or mounts freestanding) and holds the adjustable indexed shelves used to route individual pieces of mail. Sort modules run one to six sections wide and 18" to 48" tall. Most mailrooms combine both: a console for worksurface and storage, topped with one or more sort modules for the actual sorting function.
Yes. HAMILTON mail sorters are available in more than 25 standard laminate finishes plus custom colors, with mix-and-match door and case options, 20 hardware pull styles, and optional glass or acrylic doors. Because mailrooms have moved out of back-of-house basements and into high-traffic, client-facing space in many offices and universities, HAMILTON regularly matches sort module and console finishes to adjacent millwork, reception desks, and casework so the mail sorter reads as designed furniture rather than industrial shelving.
Smart locker systems for offices, hybrid workplaces, and corporate campuses across the US.
Explore Workplace Solutions →How smart delivery lockers cut per-package handling from 3.6 minutes to 15 seconds on campus.
See the Campus Case Study →CAD, finish samples, and formal specification support for architects and interior designers.
See Spec Resources →Connect with a HAMILTON mailroom specialist to review your mail volume, space, and finish requirements — and get a configuration built from the same modular platform we've been refining since 1966.
