The catalog math
A premium manufacturer like Steelcase publishes roughly 12,000 active SKUs across their full product line. That includes every chair, desk, table, panel, fabric, and finish. It is a serious catalog. It is also a finite one.
COI specifies across 100+ manufacturers. Total accessible SKU count runs north of 600,000. The number sounds inflated until you walk through a single project. A specification book for a 75-person office typically pulls products from 6 to 10 different manufacturers. Each one solves a problem the others did not solve as well.
The depth matters less than the breadth across categories. The right task chair, the right collaboration table, the right phone booth, and the right reception desk almost never come from the same manufacturer.
Where brand depth actually changes the outcome
Five categories where brand mix changes the project meaningfully.
Acoustic seating. Phone booths and high-back lounge are dominated by 8 to 10 specialty brands. A general-purpose catalog will have one or two options. An open-line dealer will compare 30 to 40 and pick the right form factor for the floor plan.
Ergonomic task seating. Humanscale, Steelcase, Herman Miller, and SitOnIt each own different parts of the ergonomic spectrum. The right chair for a 40-hour developer is not the right chair for a customer support rep doing 6 hours of calls. Mixing across manufacturers is how you match the chair to the role.
Conference tables. Tables are where finish coordination breaks down. An open-line dealer can pull a table from one manufacturer that matches the casegood finish from a different manufacturer. A single-brand dealer cannot, by design.
Reception and lounge. Hospitality-focused brands like Andreu World, Arcadia, and Bernhardt own the reception aesthetic in ways the major workplace brands do not.
Quick-ship inventory. When a project goes sideways and you need 60 chairs in 10 days, the brand you can ship that fast is rarely the brand you wanted in the brief. Open-line dealers have the inventory map across multiple manufacturers.
Where it does not matter
Two cases where the 100+ brand advantage is less relevant.
You have a corporate global agreement. If your company contracts Steelcase or MillerKnoll across all locations, the brand mix decision is already made. Open-line still helps on ancillary product the global agreement does not cover, but the core specification is locked.
You have an architect-specified product on construction drawings. If the spec sheet names a specific product, the project goes through that brand's dealer. Open-line counter-specs require formal substitution requests and architect sign-off.
What to ask the dealer
On any project north of 25 seats, the right question to a dealer is not whether they carry brand X. The right question is: if my brief is 75 seats, mid-market budget, and a 10-week schedule, what brand mix would you propose, and why?
A single-brand dealer answers with one brand. An open-line dealer answers with three to six brands and a reason for each. The answer tells you which side of the catalog math the dealer sits on.
We will sketch a brand mix for any active project. No obligation, 3-day turnaround.
