Understanding

and Specifying

cobi 434 Series

cobi 434 Series
Collaborative Chairs
Product Details
Ccobi 434 Series 346
Dimensions 348

Specifying
Collaborative Chairs 350
Swivel-Base Stools 352

Collaborative chairs Adjustability Features

c See page 30 for
cobi
Collaborative seating

a comparison to 434 Series
promotes comfort for long
other chairs
periods of time and pro-
motes movement, offers Mechanisms
automatic and intuitive
adjustments, and supports
multiple postures.
Weight-activated
•
Seat Adjustments
• QiVi 428 Series
• cobi 434 Series
Pneumatic height
•
• Node 480 Series Back Adjustments
Self adjusting
•
Other Features
Foot ring height (stool)
•

Seating Specification Guide Steelcase 345

December 2022
 Steel Seating

cobi 434 Series

cobi is collaborative seating for

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Product Details
teams that helps people move
freely, change postures, and
stay energized and comfortable.

Flexible top edge allows

for multiple postures while
maintaining support and
comfort.
Flexing fingers in back Chairs and stools are
offer support while moving available with or without
and conforming to the user. Flexible seat edge arms.
on all 3-sides supports
multiple postures while
relieving thigh pressure.

Arms are constructed

of a soft durable rubber
compound.

Seat height adjusts with

Weight-activated a 5" range from 151⁄ 2"H to
mechanism provides 201⁄ 2"H with a pneumatic Weight-activated
support by automatically adjustment mechanism. mechanism provides
responding to the users individual support without a
movements. tension control by intuitively
sensing and supporting the
users center of gravity.

Five-arm base is ­standard. Casters have hard, dual- cobi ships standard assem-
wheels that roll smoothly bled and uncartoned. A
on carpets. They are 21⁄2" cartoned request on a dealer
for increased mobility. Soft, purchase order forces cobi
dark grey treaded, dual- chairs to ship unassembled
wheel roll-control casters with the chair seat, back,
are available for use on and cylinder separated from
hard floors or mats. Stools the base. This allows for
are standard with 2" hard shipment in a smaller carton.
casters. Soft casters are Assembly by a qualified
available as an option. dealer installer is required.
Tip: Do not roll the chair Assembly instructions are
across asphalt during included. No additional tools
installation as this may are required for assembly.
damage the casters.
Product Weight
• Cobi chair: 26.3 pounds

346 Steelcase Seating Specification Guide

December 2022
 Steel Seating

cobi 434 Series

Soil retardants are treat-

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Foot ring on stools Fire Codes
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Adjustment

cobi 434 Series

Features • 4799 Platinum Metallic ments that provide long-term cSee page 814 for uphol-
• 6205 Black soil and stain resistance to stery fabrics available for
Seat Adjustments a fabric without affecting use with FCS modification.
Tip: Foot ring on stool will the shade or the integrity
coordinate to match outer of the fabric. The following Steelcase offers Fire Code
back color. For example, the Steelcase Textiles are avail- Seating modification (FCS)
4799 Platinum Metallic foot able pre-treated with soil on some seating models.
ring coordinates with the retardant. (You do not need The most rigorous fire codes
6249 Platinum Solid outer to select the soil-retardant in the nation have been
5" back color scheme and 4799 option for these fabrics and developed in California, and
Flexing seat edge on Platinum Metallic base. incur the upcharge.) the Steelcase FCS modifi-
all 3-sides supports multi- • Jacks cation is designed to meet
All Steelcase seating • Link those codes. Fire Code
ple postures while relieving
with standard uphol- Seating (FCS) indicates that
thigh pressure.
stery fabrics complies For information on soil a product is constructed
with require­ments of the retardant fabrics on Select to meet the strict fire code
Seat height adjusts State of California Technical Surfaces, please refer to the requirements of high public
pneumatically. To lower, pull Surface Materials Bulletin 117-2013. All stan- Surface Materials Reference occupancy areas such as
lever up while seated. To c See surface materials on dard seating is labeled to be Manual. theaters, meeting rooms,
raise, pull lever up and keep page 790 for specific avail­ in compliance with California and lobbies. The FCS
your weight off the chair. ability or refer to the Surface 117-2013. Soil-retardant treatment is standards will meet the
Materials Reference Manual available on all other seat- State of California Bureau
for further information. ing fabrics at an additional of Electronic and Appliance
Programs & upcharge per seating unit. Repair, Home Furnishings,
Back Upholstery Services To order this option, please and Thermal Insulation
• Connect 3D (back only) select "Soil-Retardant Technical Bulletin 133 (Cal
c See the Surface Materials Treatment" under "Optional
Reference Manual for further TB 133). Boston adopted
Seat Upholstery Accessories." the California Bureau of
detail about programs and
• Cogent: Connect (seat Electronic and Appliance
services offered for seating. For soil-retardant treatment
only) Repair, Home Furnishings,
3" • Fabric on COMs, please select and Thermal Insulation
The Customer’s Own “Soil-Retardant Treatment”
• Fabric with soil-retardant Technical Bulletin TB 133
Material (COM) Program under “Optional Accessories.”
treatment (option) test standard in 1992.
offers the opportunity for Minimums or additional yard-
• Leather
Foot ring height on customers to select fabrics age may be required. Please
• Elmosoft leather Local codes may
stools adjusts by first lifting that are not offered through contact the vendor directly
• Select Surfaces leather have special requirements
ring and rotating it counter- the standard Steelcase sur- for specific information.
• Vinyl for upholstery.
clockwise to unlock. Then face materials program for
• COM
raise or lower ring up to 3" use on Steelcase products. Extended lead times may be
• COL
to desired position before Through the COM program, necessary for this service.
rotating it clockwise to lock. Steelcase will test your Dimensions
All seat upholstery except
The foot ring has a diameter materials for application on Contact your Steelcase Page 348
c
standard Cogent: Connect
of 20". Steelcase products. Once Solutions Fulfillment
requires a sewn application.
approved, you can place your Team Representative
Specify with an S suffix.
order. Steelcase will facilitate at 1.888.STEELCASE Resources
the entire ordering process (1.888.783.3522)
Outer Back Printed Materials
and give you a production or send an email to
• 6009 Arctic White cobi Brochure
c

schedule. Steelcase will order lineone@steelcase.com.
• 6205 Black (09-0000049)
the COM fabric directly from
• 6249 Platinum cobi User Guide
c

the textile manufacturer. For
• 6295 Near Black (10-0002706)
up-to-date information regard-
ing fabric test results for all
Arm Caps, Top Edge, Online Resources
COM fabrics and details
and Casters Come Together (PDF)
c

regarding yardage require-
• 6205 Black available on
ments for most Seating lines,
• 6249 Platinum www.steelcase.com
visit the COM website. To
Tip: Frame, base, and cyl- Collaborative Seating
c

Flexing fingers in back locate the COM website:
inder will default to match Design video available on
promote movement and • Visit www.steelcase.com
outer back color. www.steelcase.com
provide support for a wide
range of postures. Product Environmental
c

Tip: If black or near black are Profiles, which provide
specified on the outer back, key environmental attri-
Soft roll-control caster
the arm caps, top edge, and butes and product certifi-
option features an internal
casters will be 6205 black. If cations can be found by
brake that activates when
platinum or arctic white are searching for Steelcase
the chair is not under load
specified on the outer back, at Origin.build.
to reduce shifting when user
the arm caps, top edge, and
stands up.
casters will be 6249 platinum.

Glides
• Black plastic

Seating Specification Guide Steelcase 347

December 2022
 Steel Seating

Dimensions
cobi 434 Series

DFeatures DOverall DSeat DFunctional DSeat DSeat DRing DBack DBack

d dDepth Width Height dDepth dSeat dWidth dHeight dHeight dWidth dHeight
d d d dDepth d dfrom dfrom d dfrom
d d d d d dFloor dFloor d dSeat
cobi 434 Series
Collaborative Chairs

231⁄ 4" 243⁄ 4" 34"–39" 191⁄ 2" 177⁄ 8" 183⁄ 4" 151⁄ 2"–201⁄ 2" N.A. 18" 191⁄ 2"

Stools

231⁄ 4" 243⁄ 4" 40"–50" 191⁄ 2" 177⁄ 8" 183⁄ 4" 21"–31" 111⁄4"–141⁄4" 18" 191⁄ 2"

d d d d d d d d d

Overall width
243/4"W
Overall depth
231/4"D
Width between arms
187/8"W

Back width
18"W

Seat-to-back angle
97 to 112

Seat pan angle

Back lumbar height .5
93/8"H
301/4"H to 401/4"H: Stool

151/2"H to 201/2"H: Chair

241/2"H to 29"H: Chair

34"H to 39"H: Chair

40"H to 50"H: Stool

21"H to 31"H: Stool

Overall height
Arm to floor

Seat height

Seat width
183/4"W

348 Steelcase Seating Specification Guide

December 2022
 Steel Seating

Dimensions

DBack DWidth DArm DArm DSeat DAngle

cobi 434 Series

dLumbar dBetween dto dHeight dPan dBetween
dHeight dArms dFloor dfrom dAngle dSeat and
d d d dSeat d dBack

93⁄ 8" 187⁄ 8" 241⁄ 4"–29" 87⁄ 8" .5° 97°–112°

93⁄ 8" 187⁄ 8" 301⁄ 4"–401⁄ 4" 87⁄ 8" .5° 97°–112°

d d d d d d

Seating Specification Guide Steelcase 349

December 2022
Steel Seating

cobi 434 Series Collaborative Chairs

Standard Includes Required to Specify

c Need help? • Weight-activated mechanism 1 Style number
Product details, • 5" pneumatic seat-height adjustment 2 Plastic color number for outer back
page 346 • Fixed arms, if selected: plastic to match outer back 3 Connect 3D color number for back
• Back upholstery: Connect 3D 4 Cogent: Connect color number for uphol-
• Seat upholstery: Cogent: Connect stery on seat
• Frame, outer back, and five-arm base: Black 5 Options, if selected (see below)
• 21⁄2"-diameter, hard composition, dual-wheel c See Surface Materials, page 790.
casters: black plastic

Options U.S. Price Required to Specify

Tip: All seat upholstery except Surface Upholstery
standard Cogent: Connect Materials • Fabric price group 1 No cost Add suffix S to the style number and
requires a sewn application. specify fabric color number.
Specify with an S suffix. • Fabric price group 2 No cost Add suffix S to the style number and
specify fabric color number.
Tip: Always add suffixes in • Fabric price group 3 +$ 37 Add suffix S to the style number and
alphabetical order when speci- specify fabric color number.
fying options to cobi seating. • Fabric price group 4 +$ 51 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 5 +$ 61 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 6 +$ 76 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 7 +$ 92 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 8 +$112 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 9 +$137 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 10 +$159 Add suffix S to the style number and
specify fabric color number.
Tip: Leather and vinyl • Steelcase leather upholstery +$258 Add suffix S to the style number and
upcharges are in addition to specify leather color number.
sewn upholstery upcharge. • Select Surfaces leather price group 1 +$258 Add suffix S to the style number and
specify Select Surfaces leather price
group 1.
cSee Surface Materials Reference Manual.
• Elmosoft leather upholstery +$301 Add suffix S to the style number and
specify Elmosoft leather color number.
• Select Surfaces leather price group 2 +$301 Add suffix S to the style number and
specify Select Surfaces leather price
group 2.
cSee Surface Materials Reference Manual.
• Sewn Upholstery +$ 58 Add suffix S to the style number and
specify fabric color number.
• Steelcase vinyl No cost Add suffix S to the style number and
specify vinyl color number.
• Customer’s Own Material (COM) No cost Add suffix S to the style number and
specify fabric color number.
• Customer’s Own Leather (COL) No cost Add suffix S to the style number and
specify leather color number.

Soil-retardant treatment +$ 36 Specify with soil-retardant treatment.

Tip: Fire Code Seating (FCS) Fire Code Seating (FCS) +$157 Add suffix F to the style number.
option is available with certain
­upholstery fabric choices only. Outer back
c Page 814 • Arctic white +$126 Specify with 6009 Arctic White.
• Platinum +$126 Specify with 6249 Platinum.
Tip: Arm caps, top edge, and • Near black +$126 Specify with 6295 Near Black.
casters default to coordinate
and match outer back color.
Casters • Soft, dark grey treaded, dual- +$ 36 Specify with soft roll-control casters.
wheel roll-control casters for use
on hard floors

c Detailed dimensions, Glides • Glides: black plastic +$ 36 Specify with glides.

page 348

350 Steelcase Seating Specification Guide

December 2022
 Steel Seating

cobi 434 Series

Collaborative Chairs

Specification Information

cobi 434 Series

Arms with
Soft Arm Caps Without Arms

DStyle DU.S. DStyle DU.S.
dNumber dBase dNumber dBase
d dPrice d dPrice

434111 $1106 434110 $1020
d d d d

For Canadian Pricing

Multiply U.S. Price by the
Canadian price factor.
See page 1 for details.

Seating Specification Guide Steelcase 351

December 2022
Steel Seating

cobi 434 Series Swivel-Base Stools

Standard Includes Required to Specify

c Need help? • Weight-activated mechanism 1 Style number
Product details, • 10" pneumatic seat-height adjustment 2 Plastic color number for outer back­
page 346 • Fixed arms, if selected: plastic to match outer back 3 Connect 3D color number for back
• Adjustable foot ring: black 4 Cogent: Connect color number for
• Back upholstery: Connect 3D upholstery on seat
• Seat upholstery: Cogent: Connect 5 Options, if selected (see below)
• Frame, outer back, and five-arm base: black c See Surface Materials, page 790.
• 21⁄2"-diameter, hard composition, dual-wheel
casters: black plastic

Options U.S. Price Required to Specify

Tip: All seat upholstery except Surface Upholstery
standard Cogent: Connect Materials • Fabric price group 1 No cost Add suffix S to the style number and
requires a sewn application. specify fabric color number.
Specify with an S suffix. • Fabric price group 2 No cost Add suffix S to the style number and
specify fabric color number.
Tip: Always add suffixes in • Fabric price group 3 +$ 37 Add suffix S to the style number and
alphabetical order when speci- specify fabric color number.
fying options to cobi seating. • Fabric price group 4 +$ 51 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 5 +$ 61 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 6 +$ 76 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 7 +$ 92 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 8 +$112 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 9 +$137 Add suffix S to the style number and
specify fabric color number.
• Fabric price group 10 +$159 Add suffix S to the style number and
specify fabric color number.
Tip: Leather and vinyl • Steelcase leather upholstery +$258 Add suffix S to the style number and
upcharges are in addition to specify leather color number.
sewn upholstery upcharge. • Select Surfaces leather price group 1 +$258 Add suffix S to the style number and
specify Select Surfaces leather price
group 1.
cSee Surface Materials Reference Manual.
• Elmosoft leather upholstery +$301 Add suffix S to the style number and
specify Elmosoft leather color number.
• Select Surfaces leather price group 2 +$301 Add suffix S to the style number and
specify Select Surfaces leather price
group 2.
cSee Surface Materials Reference Manual.
• Sewn Upholstery +$ 58 Add suffix S to the style number and
specify fabric color number.
• Steelcase vinyl No cost Add suffix S to the style number and
specify vinyl color number.
• Customer’s Own Material/Vinyl No cost Add suffix S to the style number and
(COM) specify fabric color number.
• Customer’s Own Leather (COL) No cost Add suffix S to the style number and
specify leather color number.

Soil-retardant treatment +$ 36 Specify with soil-retardant treatment.

Tip: Fire Code Seating (FCS) Fire Code Seating (FCS) +$157 Add suffix F to the style number.
option is available with certain
­upholstery fabric choices only. Outer back
c Page 814 • Arctic white +$196 Specify with 6009 Arctic White.
• Platinum +$196 Specify with 6249 Platinum.
Tip: Arm caps, top edge, and • Near black +$196 Specify with 6295 Near Black.
casters default to coordinate
and match outer back color. Casters • Soft, dark grey treaded, dual- +$ 36 Specify with soft roll-control casters.
wheel roll-control casters for
use on hard floors

c Detailed dimensions, Glides • Glides: black plastic +$ 36 Specify with glides.

page 348

352 Steelcase Seating Specification Guide

December 2022
 Steel Seating

cobi 434 Series

Swivel-Base Stools

Specification Information

cobi 434 Series

Arms with
Soft Arm Caps Without Arms

DStyle DU.S. DStyle DU.S.
dNumber dBase dNumber dBase
d dPrice d dPrice
d d d d
434711 $1541 434710∆ $1455
d d d d

For Canadian Pricing

Multiply U.S. Price by the
Canadian price factor.
See page 1 for details.

Seating Specification Guide Steelcase 353

December 2022
354 Steelcase Seating Specification Guide
December 2022