Office Master OM5 Ergonomic Office Chair

3 out of 5 (based on 1 review)
Product ID: 18227
Highlights
  • Unique self-regulating seat mechanism that provides lumbar support with minimal adjustments
  • For arms: MR45 with sliding and pivoting mechanism is the recommended arm for this chair
  • Suitable for users above 5' 3" tall
  • Standard caster: SC-CAS0065-S
  • For extra comfort, OM5 seats have a layer of memory foam, UPHCFT, built under the normal cushion   
  • Lifetime Limited Warranty
  • ErgoDirect recommends OM5-EX for average to tall users. For users with longer legs, we recommend OM5-XT with deeper seat than OM5-EX
Options
List Price: $668.00
Our Price: $434.20
Shipping: $29.95 *
Usually ships in 5 to 7 business days
* applies to Contiguous United States
Note: This gamer/office chair is custom-made and non-returnable. All fabric colors shown on your computer screen are approximate, based on the resolution of your monitor and subject to variation from the actual color on physical chairs. For more accurate ideas of color tones, etc. please contact customerservice@ergodirect.com or call 888-456-ERGO to obtain a sample or fabric swatch.

Description

Office Master OM5 Series is a self weighing chair that intuitively responds to a wide range of body weights and sizes without the need for manual tension. Simple and Elegant, OM5 Ergonomic Task Chair is designed for daily tasks and occasional resting. There is no knob or handle for manual adjustments. It adjusts itself automatically as your body moves with the chair. At any given position, the chair provides full support for your back. Whether it's to complement the decor of an executive suite or to function in the simplest of workplaces, the OM5 Series is a chair that's right for you. Delivering comfort, style, and performance in an innovative, advanced office seating line at the extremely attractive price. You won't find this combination of quality and affordability anywhere else but Office Master.

The OM5 Series is simplicity with a purpose. Combining modern curves, chrome accents and clean lines with virtually no paddles or extraneous distractions, the OM5 Series by Office Master, Inc. carries with it an air of understated sophistication that fits any environment and any need.
Office Master challenged up-and-coming designer Francisco Romero of Phi design to innovate a wholly new chair starting quite literally from nothing. The OM5 Series is the result of that call to action. By stripping away all restrictions on this talented designer, Office Master worked closely with Phi design for nearly 2 years to bring this sophisticatedly simple chair to life.

Available in Modern Black (standard armless, with an unupholstered black PolyFlex back, and Standard Black package) and Palladium Grey (standard armless, with an unupholstered grey PolyFlex back, and Polished Aluminum package).

Specifications

Model OM5 ED-OM5-EX ED-OM5-XT
Overall Width 27" 27" 28"
Overall Height 37 - 42" 40 - 45" 40.5 - 45.5"
Back 18" W x 21" H 18" W x 24.5" H 18" W x 24.5" H
Seat 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery) 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery) 19.75" W x 21" D (20" D Back Upholstery)
Seat Height with 4" cylinder 14.7 - 18.5" (4" travel range) 14.7 - 18.5" (4" travel range) 17.7 - 21.5" (4" travel range)
Seat Height with 5" cylinder (standard cylinder) 16 - 21" (5" travel range) 16 - 21" (5" travel range) 19 - 24" (5" travel range)
Seat Height with 6" cylinder 18.5 - 25" (6" travel range) 18.5 - 25" (6" travel range) 21.5 - 28" (6" travel range)
COM

Back = 0.75 yards

Seat = 0.75 yards

Back = 1 yard

Seat = 0.75 yards

Back = 1 yard

Seat = 1 yard

Carton Weight 64 lbs 67 lbs 69 lbs
UPS Weight 101 lbs 195 lbs 195 lbs
Weight Capacity 300 lbs 300 lbs 300 lbs
Arms Optional Optional Optional
Warranty Lifetime Limited Lifetime Limited Lifetime Limited

Features

  • Variable back resistance
  • PolyFlex Back
  • Body Activated Motion
  • Swing Arm
  • Front Edge Waterfall Flex
  • Designed to support users up to 300 lbs under standing commercial usage

Option 2: Frame

OM5 Modern Black Frame

Black Frame

Grey Frame

Gray Frame

Options 3 and 4: Cylinders and Base Type

OB5 - 5" Black Cylinder and B27 Black Nylon Base

OB5 - 5" Black Cylinder

B27 - Black Nylon Base

OC5 - 5" Polished Chrome Cylinder and P27 Polished Aluminum Base

OC5 - 5" Polished Chrome Cylinder

P27 - Polished Aluminum Base

Office Master GSPPKG Fixed Height Chrome Footring and Base

OC8 - 8" Chrome Cylinder

GSP - Fixed Height Chrome Footring and Base

CYL-4HD - 4" heavy-duty cylinder

CYL-4HD - 4" heavy-duty cylinder

CYL-6SHD - 6" heavy-duty cylinder

CYL-6SHD - 6" heavy-duty cylinder

Office Master Cylinders

Option 5: Arms Type

MR5 - Height adjustable T-arms

MR5 - Height adjustable T-arms

MR45 - Height adjustable T-arms with smooth fore-aft, side-to-side, and pivoting motion armpads.

MR45 - Height adjustable T-arms with smooth fore-aft, side-to-side, and pivoting motion armpads

MR50 - Height adjustable T-arms with RP50 extra-wide arm top mechanism and superior range of motion (2" per side).

MR50 - Height adjustable T-arms with RP50 extra-wide arm top mechanism and superior range of motion (2" per side)

MR50 - Height adjustable T-arms with RP50 extra-wide arm top mechanism and superior range of motion (2" per side).

MR65 - Height adjustable T-arms with RP65 lockable arm pad

Option 6: PolyFlex Back

PB - Modern Black

PB - Modern Black

PG - Palladium Grey

PG - Palladium Grey

PW - Arctic White

PW - Arctic White

Option 7 & 8: Back & Seat Upholstery Fabric Color

Chair back could be upholstered as mesh with following 11 Mesh fabrics

OM5 Zodiac Mesh (Back Only)

Content 100% Polyester
Backing None
Width 54"
Finish None
Abrasion ASTM-D-3597 (Cotton Duck) Exceeds 1,002,000 Double Rubs
Breaking Strength ASTM-D-5034 Exceeds Warp 129 lbf/Fill 78 lbf
Lightfastness 40 Hrs. - Class 5
Colorfastness To Crocking AATCC-8 Passes Class 4 min.
Flammability Passes California TB 117-2013; NFPA 260, Class 1; ASTM E84, Class 1 or A; FMVSS 302
Cleaning Code W
OM5 Zodiac 2300 Scorpio Mesh Back Fabric Color

2300 Scorpio

OM5 Zodiac Mesh Back 2301 Gemini Fabric Color

2301 Gemini

OM5 Zodiac Mesh Back 2302 Virgo Fabric Color

2302 Virgo

OM5 Zodiac Mesh Back 2303 Taurus Fabric Color

2303 Taurus

OM5 Zodiac Mesh Back 2304 Capricon Fabric Color

2304 Capricorn

OM5 Zodiac Mesh Back 2305 Pices Fabric Color

2305 Pisces

OM5 Zodiac Mesh Back 2305 Pices Fabric Color

2306 Aquarius

OM5 Zodiac Mesh Back 2307 Leo Fabric Color

2307 Leo

OM5 Zodiac Mesh Back 2308 Aries Fabric Color

2308 Aries

OM5 Zodiac Mesh Back 2309 Sagittarius Fabric Color

2309 Sagittarius

2310 Libra

Following 4 grades of fabrics and leathers could be used for both chair seat and chair back

Grade 2 - SoftSit 2570 - 2579

Content 100% Polyester
Width 58/59" usable
Weight 17.87 +/- 1.0 oz./linear yard
Backing 100% Polyester non-woven scrim
Finish None
Repeat No
Abrasion 110,000 Double Rubs
Breaking Strength Warp 199 lbs. / Fill 199 lbs.
Crocking Dry Class 4 / Wet Class 3
Lightfastness 20 Hrs. - Class 4
Flammability Passes California TB 117-2013
Cleaning Code WS
Office Master Grade 2 SoftSit 2570 Graphene

2570 Graphene

Office Master Grade 2 SoftSit 2571 Basalt

2571 Basalt

Office Master Grade 2 SoftSit 2572 Ash

2572 Ash

Office Master Grade 2 SoftSit 2574 Kelvin

2574 Kelvin

Office Master Grade 2 SoftSit 2575 Tsunami

2575 Tsunami

Office Master Grade 2 SoftSit 2576 Magma

2576 Magma

Office Master Grade 2 SoftSit 2577 Molten

2577 Molten

2578 Kipuka

2578 Kipuka

Office Master Grade 2 SoftSit 2579 Phlox

2579 Phlox

Grade 3 - Line Up 3500 - 3508

Content 100% Post Consumer Recycled Polyester
Width 56"
Weight 1.24 oz./linear yard
Backing Acrylic
Finish Soil and Stain Resistant
Repeat Length 1.75"
Repeat Width 3.75"
Directional Yes
Abrasion 100,000 Double Rubs
Breaking Strength Warp 286 lbs. / Fill 309 lbs.
Crocking Dry Class 4.5 / Wet Class 4.5
Lightfastness 40 Hrs. - Class 5
Flammability Passes California TB 117-2013; NFPA 260, CLASS 1; UFAC, CLASS 1
Cleaning Code WS
Office Master Grade 3  Line Up 3500 Shadow Fabric Color

3500 Shadow

Office Master Grade 3  Line Up 3501 Pewter Fabric Color

3501 Pewter

Office Master Grade 3  Line Up 3503 Sandstone Fabric Color

3503 Sandstone

Office Master Grade 3  Line Up 3504 Baltic Fabric Color

3504 Baltic

Office Master Grade 3  Line Up 3505 Tranquil Fabric Color

3505 Tranquil

Office Master Grade 3 Line Up 3507 Spice Fabric Color

3507 Spice

Office Master Grade 3 Line Up 3508 Fern Fabric Color

3508 Fern

Grade 3 - Cinema 3P30 - 3P38

Content 100% Polyurethane
Backing

70% Polyester, 30% Cotton

Finish

Antimicrobial

Width 54"
Abrasion 200,000 Double Rubs
Lightfastness

Class 4/100 hrs, min

Flammability Passes California TB 117-2013; UFAC, CLASS 1; NFPA 260 CLASS 1; MVSS 302; IMO A. 652 (16) 8.2
Cleaning Code WS
Office Master Grade 3 Cinema 3P30 Noir Fabric Color

3P30 Noir

Office Master Grade 3 Cinema 3P31 Academy Fabric Color

3P31 Academy

Office Master Grade 3 Cinema 3P32 Ensemble Fabric Color

3P32 Ensemble

Office Master Grade 3 Cinema 3P33 Icon Fabric Color

3P33 Icon

Office Master Grade 3 Cinema 3P34 Blockbuster Fabric Color

3P34 Blockbuster

Office Master Grade 3 Cinema 3P36 Cue Fabric Color

3P36 Cue

Office Master Grade 3 Cinema 3P38 Cameo Fabric Color

3P38 Cameo

Grade 4 - Rocket 4500 - 4508

Content 27% Polyester, 73% Recycled Polyester
Width 54"
Backing None
Finish NANO-TEX Resists Spills
Repeat None
Abrasion 100,000+ Double Rubs
Breaking Strength Warp 50 lbs. / Fill 50 lbs.
Crocking Dry Class 4 / Wet Class 3
Lightfastness 40 Hrs. - Class 4
Flammability Passes California 117-E; UFAC Class 1; NFPA 260 Class 1
Cleaning Code WS
Office Master Grade 4 Rocket 4500 Ink

4500 Ink

Office Master Grade 4 Rocket 4501 Graphite

4501 Graphite

Office Master Grade 4 Rocket 4503 Taupe

4503 Taupe

Office Master Grade 4 Rocket 4504 Navy

4504 Navy

Office Master Grade 4 Rocket 4505 Bright Blue

4505 Bright Blue

Office Maste Grade 4 Rocket 4506 Red-Orange

4506 Red-Orange

Office Master Grade 4 Rocket 4507 Flame

4507 Flame

Office Master Grade 4 Rocket 4508 Sage

4508 Sage

Grade 5 - Comfortknit Solids 5501 - 5539

Content 100% Repreve PC Polyester
Width Manufactured to dimension specifications
Weight 16 oz./square yard
Backing None
Finish None
Repeat None
Directional Yes
Railroaded No
Abrasion Exceeds 250,000 Double Rubs
Breaking Strength Warp 209.4 lbf. / Fill 251.6 lbf.
Pilling Resistance Class 4
Crocking Dry 1 / Wet 1
Lightfastness 40 Hrs. - 1
Waterfastness Class 5 for staining / Class 5 for shade color
Flammability Passes California TB 117-2013; NFPA 260, CLASS 1; UFAC, CLASS 1
Cleaning Code W
Office Master Grade 5 Comfortknit Solids 5501 Flint

5501 Flint

Office Master Grade 5 Comfortknit Solids 5502 Monarch

5502 Monarch

Office Master Grade 5 Comfortknit Solids 5503 Smoke

5503 Smoke

Office Master Grade 5 Comfortknit Solids 5506 Cappucino

5506 Cappucino

Office Master Grade 5 COmfortknit Solids 5512 Xanadu

5512 Xanadu

Office Master Grade 5 Comfortknit Solids 5515 Baltic

5515 Baltic

Office Master Grade 5 Comfotknit Solids 5539 Wine

5539 Wine

Grade 5 - Architect 5700 - 5709

Content 100% Repreve PC Polyester
Width Manufactured to dimension specifications
Weight 16 oz./square yard
Backing None
Finish None
Repeat None
Directional Yes
Railroaded No
Abrasion Exceeds 250,000 Double Rubs
Breaking Strength Warp 199.8 lbf. / Fill 243.5 lbf.
Pilling Resistance Class 5
Crocking Dry 1 / Wet 1
Lightfastness 40 Hrs. - 1
Waterfastness Class 5 for staining / Class 5 for shade color
Flammability Passes California TB 117-2013; NFPA 260, CLASS 1; UFAC, CLASS 1
Cleaning Code W
Office Master Grade 5 Architect 5700 Gehry Fabric Color

5700 Gehry

Office Master Grade 5 Architect 5701 Gaudi Fabric Color

5701 Gaudi

Office Master Grade 5 Architect 5702 Kahn Fabric Color

5702 Kahn

Office Master Grade 5 Architect 5704 Meier Fabric Color

5704 Meier

Office Master Grade 5 Architect 5705 Pei Fabric Color

5705 Pei

Office Master Grade 5 Architect 5706 Yamasaki Fabric Color

5706 Yamasaki

Office Master Grade 5 Architect 5708 Hadid Fabric Color

5708 Hadid

Office Master Grade 5 Architect 5709 Wright Fabric Color

5709 Wright

Leather - Evita Leather

Width Varies
Finish Water based protection
Abrasion Taber test, 500 cycles, CS-10, 500 grams
Breaking Strength Newark Flex 20,000 cycles
Office Master Evita Black Leather LBLK

LBLK Black

Office Master Evita Vanilla Leather LVAN

LVAN Vanilla

Office Master Evita Stone Leather LSTN

LSTN Stone

Office Master Evita Wite Leather LWHT

LWHT White

Option 9: Casters - Wheels

OM5 CAS0065-S Caster

CAS0065-S (Soft)

CAS0050-SS - Safety soft casters

CAS0050-SS (Safety Soft)

CAS-RUB - Rubber casters

CAS-RUB (Rubber)

CAS0050-RB - Reverse-braking casters

CAS-REV Reverse Braking

GLD-R - Glides

GLIDES

Model Om5-B, OM5-G
Manufacturer Office Master Chairs
Part Number OM5-B, OM5-G
OM5
Overall Width 27"
Overall Height 37 - 42"
Back 18" W x 21" H
Seat 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery)
Seat Height 16 - 21"
COM Back = 0.75 yards, Seat = 0.75 yards
Warranty Lifetime Limited
Carton Weight 64 lbs
UPS Weight 101 lbs
Arms Optional
Weight Capacity 300 lbs
ED-OM5-EX
Overall Width 27"
Overall Height 40 - 45"
Back 18" W x 24.5" H
Seat 19.75" W x 17-18.5" D (16-17.5" D Back Upholstery)
Seat Height 16 - 21"
Base Diameter 26"
COM Back = 1 yard, Seat = 0.75 yards
Warranty Lifetime Limited
Carton Weight 67 lbs
UPS Weight 195 lbs
Arms Optional
Weight Capacity 300 lbs
ED-OM5-XT
Overall Width 28"
Overall Height 40.5 - 45.5"
Back 18" W x 24.5" H
Seat 19.75" W x 21" D (20" D Back Upholstery)
Seat Height 19 -24"
COM Back = 1 yards Seat= 1 yards
Carton Weight 69 lbs
UPS Weight 195 lbs
Arms Optional
Warranty Lifetime Limited
Weight Capacity 300 lbs

Review this product

Office Master OM5 Ergonomic Office Chair

Decent, not amazing., Dec 18, 2015
by Zeth, Pennsylvania
I work a job the requires me to sit for 10 hours a day, four days a week. I wanted a chair that was up for the challenge. This chair didn't seem very popular, but I was unable to find a "bad" review. After some long research sessions and taking into account the price and durability, I found myself always coming back to this chair.
Now I will say, the chair is built really well. Seems very durable and made with quality products. The recline feature is very very nice. Lumbar support is perfect. I find my back no longer hurts after sitting in it for a few hours like my old chair.

That's about where the good stuff ends I'm afraid.
I will say this now, if you are over six foot tall, go with the XT version.
I this chair is not very big, AT ALL.
I went with the normal version trying to save money and didn't think it would be that much of a difference looking at the specs, but either I was wrong, or this chair just wasn't worth it.
The bottom part of the chair is just too small in my opinion. There is about a six inch gap between where the chair ends and where my legs bend. I'm only 6'1.
I still notice my bottom starts to hurt after an hour or two of sitting, just like my old chair.
That was one thing I was trying to remedy with a high end chair purchase like this one, but at least my back no longer hurts.
Most people don't sit as long as I do, so this may not be a big problem for most.
That's pretty much it for the cons.

To summarize, the chair seems very durable and made with high quality material.
The recline feature is great and back support is wonderful.
The bottom seat needs some work for comfort.
If you're going to buy this chair, go with the XT version.
Overall I'm not very impressed as the bottom seat just doesn't work for me, and thus I'll be giving this 3 stars.
Remember this is just my opinion. Everyone's use of the chair will be different as well as the high and weight, so take this review with a grain of salt.

Comment from ErgoDirect.com

I am sorry to hear this is not what you expected. You can get a taller cylinder if that would help. I will contact you to see if there is anything we can do.

Thank you for your honest review :)
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