CBS Flo, dual-screen
Two Screens, Two Springs
A dual monitor setup fails when both screens hang off one spring: the heavier one drags, the lighter one floats, and the pair never sits level. Two Flo arms avoid that entirely — each arm has its own patent-pending Dual Rate Spring and its own D-ring adjuster, so a 24-inch panel and a 27-inch panel are each set for their own weight and each moves without disturbing the other.
Each arm carries 2 to 7 kg, up to 34 inches, flat or curved to a 1000R radius, with 584 mm of reach and 483 mm of vertical travel.
The Mechanism
The Dual Rate Spring
CBS's patent-pending Dual Rate Spring is the difference between this and the generation before it. A single-rate spring is a compromise: set it for a light screen and a heavy one sags, set it for a heavy one and a light screen floats. A dual-rate spring changes its effective rate through the travel, so one arm covers 2 to 7 kg and holds position properly at both ends of that range.
You set it with the diamond D-ring on the arm, against a printed weight gauge, rather than by counting turns of an allen key. It takes seconds and you can see what you have set it to.
The Details
Five Things That Make It a Flo
The spring, the D-ring, the VESA head and the cable route — doubled, one set per arm — and how CBS actually builds a two-screen desk.
Two Dual Rate Springs
Each arm has its own patent-pending Dual Rate Spring, so a 24-inch panel and a 27-inch panel are each set for their own weight and neither drags on the other. Each arm covers 2–7 kg.
A D-Ring on Each Arm
Tension is set arm by arm with the diamond D-ring, against a printed weight gauge, rather than by counting turns of an allen key. One setting for the heavy screen, one for the light one.
Two VESA Heads
Both heads are VESA 75 and 100 compliant and turn between portrait and landscape on fingertip pressure. A 180° stop function on each arm keeps a screen from swinging into the desk beside you.
Cable Management on Both Arms
Three-point cable management on each arm: clipped in at the head, through the forearm, and down at the post through a cradle that holds the loop. The mid clip stops the slack bellying out.
Two Arms or a Shared Post
Two screens come either from two standalone Flo arms (FLO/013/010) with two desk fittings, each screen at its own height, or from CBS's separate Flo Modular range (FLO/013/007) on a shared Wishbone post. The two are not interchangeable.
The Numbers
- Screens
- Two, independently adjusted
- Screen Weight
- 2–7 kg per arm
- Horizontal Reach
- 584 mm per arm
- Vertical Travel
- 483 mm per arm
- VESA
- 75 and 100
- Warranty
- 12 years
All figures are Colebrook Bosson Saunders' own, from its Flo product page and the MillerKnoll press material. The photographs are CBS's own product photography. CBS sells the standalone Flo (FLO/013/010) as a single arm; a two-screen desk is built from two arms, or from CBS's separate Flo Modular range (FLO/013/007 on a shared post, silver and black only). We confirm the exact configuration with you before shipping.
Two Arms or a Shared Post
How CBS Builds a Two-Screen Flo
Worth knowing before you order, because CBS offers more than one route to two screens. The standalone Flo (FLO/013/010) is sold as a single arm in silver, white or black, so a two-screen desk takes two arms and two desk fittings — each fully independent, and each screen can sit at its own height. CBS also makes Flo Modular, a different arm (FLO/013/007) on a shared Wishbone post, supplied in silver and black only; that is the configuration photographed above.
The two are not interchangeable and the modular route has no white option. Tell us the desk and the two screens on 02 9640 0642 and we will confirm in writing which configuration we are shipping you before the order goes through.
Cable Management
Cables, Properly
Three-point cable management: the cables clip in at the head, run through the forearm, and drop at the post through a cradle that holds the loop instead of letting it swing. CBS added a mid clip on the current generation, which is the bit that stops the slack bellying out when the screen is pushed back.
The side panels come off and can be swapped, so the arm can be re-finished rather than replaced if a floor changes colour scheme.
Why We Stock It
Colebrook Bosson Saunders has been designing monitor arms in London since 1990 and is now part of MillerKnoll. Its arms turn up in the fit-outs where somebody cared: the mechanism is quiet, the cable route is properly thought through, and the 12-year warranty says what CBS thinks of its own tolerances.
We stock CBS because it sits in the gap between a cheap arm that sags in a year and a Humanscale at twice the price, and because the desk fittings are shared across the range — so a floor with Flo and Ollin arms takes one set of spares. Call 02 9640 0642 for a floor quote, or visit our Pyrmont showroom at 1/209 Harris Street to see what is on the floor.
Colebrook Bosson Saunders
Designed and Engineered in Britain
Thirty-five years of monitor arms, a 12-year warranty, and desk fittings that are shared across the range.
Features & Specifications
Key Features
-Two Flo arms, each with its own Dual Rate Spring, D-ring adjuster and cable route
-Screen weight 2–7 kg (4.4–15.4 lb); screens up to 34 in, flat or curved to a 1000R radius
-Horizontal reach 584 mm; vertical travel 483 mm; 180° stop function
-VESA 75 and 100 compliant; fingertip portrait-to-landscape rotation
-Three-point integrated cable management with a smart cable cradle and mid clip; interchangeable side panels
-Desk fittings: split clamp 0–65 mm, top-mount clamp 12–25 mm, or grommet 10–35 mm
-49% recycled content; designed to be 100% recyclable; plastic-free packaging (CBS)
-Red Dot Design Award 2011 and 2025; Good Design Award (GDA Japan) 2025; designed and engineered in Britain
-Warranty 12 years (CBS)
Downloads
Colebrook Bosson Saunders — Flo monitor armLink →Colebrook Bosson Saunders — Flo ModularLink →MillerKnoll — CBS reimagines the Flo monitor arm (April 2025)Link →MillerKnoll — Flo wins Good Design Award 2025Link →Chair Dinkum — warrantyLink →Dimensions
ScreensTwo, independently adjusted
Screen Weight2–7 kg (4.4–15.4 lb) per arm
Screen SizeUp to 34 in, flat or curved to 1000R
Horizontal Reach584 mm
Vertical Travel483 mm
Stop Function180°
VESA75 and 100 compliant
Desk ThicknessSplit clamp 0–65 mm; top mount 12–25 mm; grommet 10–35 mm
Recycled Content49% (CBS)
Warranty12 years
All figures are Colebrook Bosson Saunders' own, from its Flo product page and the MillerKnoll press releases linked above. CBS does not publish a per-fitting weight or a recycled-content figure for the Ollin. Warranty terms are on CBS's site and our warranty page. CBS sells the standalone Flo (FLO/013/010) as a single arm; a two-screen desk is built from two arms, or from CBS's separate Flo Modular range (FLO/013/007 on a shared post, silver and black only). We confirm the exact configuration with you before shipping.
Frequently Asked Questions
Check three things: the screen's weight in kilograms (the number that matters most), its VESA hole pattern on the back, and your desk's thickness where the clamp goes. The weight range is in the specifications above; almost every office monitor is VESA 75 × 75 or 100 × 100. CBS gives 2 to 7 kg per arm and up to 34 inches, so each of your two screens needs to sit inside that. If your screen has no VESA holes, a VESA adapter plate is usually available for it — send us the model on 02 9640 0642 and we will check before you order.
Two arms, each with its own spring, its own adjuster and its own desk fitting — that is what makes the two screens independently adjustable. CBS's alternative for two screens is its separate Flo Modular range, which puts two different arms (FLO/013/007) on a shared Wishbone post and comes in silver and black only. The two routes behave differently and we will confirm which one your order is before it ships: call 02 9640 0642.
Yes — CBS states up to 34 inches, flat or curved to a 1000R radius, within the 2 to 7 kg weight range. A curved panel puts its mass further from the VESA plate than a flat one of the same weight, so set the tension with the screen actually fitted rather than guessing.
Measure the desk where the arm will go. The split clamp takes 0 to 65 mm and is the default; the top-mount clamp takes 12 to 25 mm and sits more discreetly; the grommet fitting takes 10 to 35 mm and goes through an existing cable port. If the desk has a thick edge beam or a return in the way, send us a photo on 02 9640 0642 and we will tell you which one works.
Yes, and this is the main reason to use two arms rather than a crossbar. Each arm is tensioned for its own screen, so a 27-inch main display and a 24-inch secondary sit at whatever heights and angles suit you. Both need to be inside the 2 to 7 kg range.
Colebrook Bosson Saunders publishes a 12-year warranty on this arm against defects in materials and workmanship in normal use. Claims come to Chair Dinkum on 02 9640 0642 and we lodge and manage them. Full terms are on Colebrook Bosson Saunders's site and our warranty page, and your Australian Consumer Law rights apply in addition.
Yes — visit our Pyrmont showroom at 1/209 Harris Street to see what is on the floor, and we can put a screen on an arm so you can feel the movement before you commit to a floor's worth. Call 02 9640 0642 first so we can have the one you want set up.
