Brands We Specify
Not locked to MillerKnoll, Steelcase, Haworth, or any single manufacturer. We choose the right product from 100+ independent and mid-market brands based on your project needs.
Our Brand Partners
We maintain direct relationships with the industry's leading independent manufacturers.
Every brand is available across all our services and industries.
The Brands We Specify Most
What each manufacturer makes, where COI tends to specify it, and which brands it is bid against on the same brief.
Humanscale
Ergonomic seating, monitor arms and sit-stand. New York, NY.
Read the brand page →OFS
Private office, conference, lounge and tables. Huntingburg, IN.
Read the brand page →National
Casegoods, private office and lounge. Jasper, IN.
Read the brand page →Teknion
Systems furniture, benching and architectural walls. Toronto, ON.
Read the brand page →SitOnIt
Task seating that ships fast. Cypress, CA.
Read the brand page →Kimball
Casegoods, systems and collaborative furniture. Jasper, IN.
Read the brand page →Global Furniture
Seating, casegoods and tables at a working price. Toronto, ON.
Read the brand page →HON
Workstations, seating and storage in stock. Muscatine, IA.
Read the brand page →Groupe Lacasse
Laminate casegoods and desking built to order. Saint-Pie, QC.
Read the brand page →Hightower
Lounge, soft seating and the settings in between. Portland, OR.
Read the brand page →Artopex
Systems, desking, casegoods and seating. Granby, QC. COI is the Artopex dealer for New Hampshire.
Artopex vs. top brands →About Brands and Authorization
Is COI an authorized dealer for these brands?
COI is an open-line dealer and specifies from 100+ manufacturers. Authorization, territory, warranty routing and the quotation path are confirmed in writing for the exact brand and product on each project, and nothing on these pages should be read as a standing authorization claim for a given line. COI is the Artopex dealer for New Hampshire and one of 10 RESEAT dealers in the U.S.
How does COI choose between brands on a project?
By bidding the same specification across several of them. A workstation typical, a private-office typical and a task-chair standard each go out to three or more manufacturers, and the proposal shows the prices, lead times, warranties and finishes side by side. The brief decides, not a dealer contract.
Can COI mix brands in one office?
Yes, and most COI projects do. A typical floor pairs one manufacturer for workstations, another for private offices, a third for task seating and a fourth for the lounge, each chosen on merit for that room type. COI coordinates the finish palette, the schedule and the installation so the floor reads as one project.
Do you carry Steelcase, MillerKnoll or Haworth?
Those brands sell through contracted major-line dealers, so COI does not carry them. When a client has a quote from one of them, COI prices an equivalent open-line specification against it line by line. Across five New England projects in 2026 the average gap was 32 percent on the same scope.
Why Not Just Buy Online?
Here's a direct comparison between buying retail and working with a full-service open-line dealer.
| Category | Wayfair / IKEA / Amazon | Commercial Office Interiors |
|---|---|---|
| Commercial-Grade Products | Residential furniture rated for 8-hour home use. 1-year warranty. Particle board, thin laminates, and foam that bottoms out in months. | Contract-grade furniture built for 24/7 commercial environments. 12-year average warranty. Steel frames, high-density foam, commercial-rated fabrics. |
| Professional Space Planning | You measure, you guess, you order online, you hope it fits. Returns are expensive and logistics are on you. | Certified designers create 2D floor plans and photorealistic 3D renderings. See your entire office before a single order is placed. 3-day turnaround. |
| White-Glove Installation | Flat-pack boxes delivered to your lobby. You assemble. You deal with missing hardware and damaged panels. | Professional delivery, assembly, and placement per the approved floor plan. Building coordination, debris removal, and punch-list walkthrough included. |
| Code & ADA Compliance | No compliance verification. Your responsibility if furniture fails a building inspection or ADA audit. | Occupancy calculations, ADA verification, fire code compliance, and egress path planning built into every space plan. |
| Lifecycle Management | When it breaks or wears out, you throw it away and reorder. No repair, resale, or recycling path. | RESEAT-powered Day 2 lifecycle: repair, reupholster, resell, donate, or recycle. Full lifecycle management from a single partner. |
| Total Cost of Ownership | Low sticker price, but replace every 2-3 years. No volume pricing. No depreciation guidance. Higher 10-year cost. | Higher initial investment, but 12+ year lifespan. Volume pricing across 100+ brands. Commercial depreciation guidance. Lower total cost over the life of the furniture. |
The sticker price on Wayfair looks attractive, but the total cost over 10 years is often higher than working with us.
Major-Line vs. Open-Line
Understanding the difference matters when choosing a furniture dealer.
Major-Line Dealer
- ✕ Contractually locked to one manufacturer
- ✕ Must hit manufacturer sales quotas
- ✕ Recommendations influenced by dealer agreements
- ✕ Limited ability to mix brands
Open-Line Dealer (COI)
- ✓ Access to 100+ manufacturers
- ✓ Products chosen on merit
- ✓ Mix premium and value brands
- ✓ Faster timelines with equivalent alternatives
Furniture Categories
Browse by product type. Every category is available across all manufacturers and industries.
Task Chairs
Desks
Conference Tables
Lounge Seating
Storage
Standing Desks
Reception
Acoustic Solutions
Products Chosen on Merit
When a major-line dealer recommends a chair, ask yourself: is it the best chair for my project, or the best chair that keeps their dealer agreement intact?
Best fit wins
Products chosen on merit, not manufacturer incentives.
Budget flexibility
Mix premium and value brands strategically.
One point of contact
We manage all manufacturer relationships.
Faster timelines
If one brand has a 12-week lead time, we find an equivalent that ships in 4.
Two Honest Comparisons
Most dealers will not write these out. We will.
Artopex vs. Top Brands
Side-by-side against Steelcase, MillerKnoll, Haworth, Teknion, Kimball, and Global. Pricing, lead times, and where each one earns its specification.
Read the comparison →
COI vs. NE Dealers
Open-line vs. major-line. How we compare to Red Thread, Creative Office Pavilion, Peabody Office, and others on the structural model that drives recommendations.
See the difference →