3120 Split High Back

The New 3120 Split Back Office Chair

The newest edition to our family of 24/7 office chairs is the 3120.The 3120 Split High Back offers exceptional comfort, quality, and ergonomics in a sleek new look with a newly designed fully adjustable articulating headrest and brand-new stitching pattern. Our fully adjustable 24-hour 3120 split back office chair is loaded with features to change how you feel about sitting. The heavy-duty ergonomic high back office chair design provides ample support and comfort throughout long days.

Revolutionizing Comfort In Various Markets

This chair is ideal for numerous industries such as public safety, government, process control, utilities, transportation and more. The back also provides sleek contouring that is not only stylish, but practical in accommodating duty belts. The durable, heavy duty design ensures it will take the abuse of a multishift environment - all this backed by our We Give a Sit Warranty.

Learn more below and contact us to see how we can provide you with an lasting, ergonomic solution..



Not a better warranty in the business. 24/7 warranty covers all product failure for people up to 550 lbs for 6 years.

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24/7 Use Testing

Rigorously tested to beyond the 24/7 test standards in both the US and UK.

  • FNEW 83-269 Test
  • FIRA Standard 055:2005 Test
  • ANSI/BIFMA X .511 (bariatrics)
  • Fire Testing – CA 112 and 133

3120 Split Back Office Chair Features

Seven-Leg Base

Seven legs mean a 20% improved ease of movement and more stability over five-leg chairs. This is especially important for larger individuals who may find moving in their chairs difficult.

Steel construction with metal strength ring and tested to 10,000lb dynamic load, our base is unmatched in strength and stability.

Fully-adjustable Articulating Headrest

Our new recessed, articulating headrest can be used as a headrest, neck roll, or swung out of the way. Adjustable in height to 6 positions, it allows you to sit according to the task at hand.

Adjustable Lumbar Support

Infinitely adjustable lumbar support puts back pressure relief at your fingertips. Adjustable back ensures the lumbar is exactly where you want it.

Soft Touch Lumbar

Our new built-in lumbar soft touch pump makes adjusting your lumbar support a breeze. Give the button a few pushes until you find your sweet spot. Hold the button beneath it to decrease the firmness of the support.

EAS2 Ergo Air Suspension System

You may not notice it in the first 10 minutes, but you may after the first shift. You will certainly notice it after weeks, months, and years of prolonged seating in a Concept Seating chair. You’ll just feel better.

The chair in which you've been sitting, with its Ergo Air Suspension System (EAS2) has kept the blood and oxygen flowing through your body, especially through the lower extremities, improving blood flow and increasing oxygen levels to tissues.

Adjustable Armrests

Easily adjust the width of the armrests to accommodate a larger person or a person with a duty belt just by sliding out the arms.

Adjustment is made by loosening the thumb screw and adjusting to the desired width. Adjustable to 2.5” on both sides.

Adjustable Backrest Height

This model also features a height-adjustable backrest. Raise or lower it to one of 6 positions to fit your body type and fine-tune the lumbar support.

Height Adjustment

Our goal is to provide proper ergonomic support for most body types, starting with the 4th-percentile female size (approximately 5’ 0”) up to the 96th-percentile male size (approximately 6’ 5”).

Height adjustment is at your fingertips.

Five-Position Tilt Lock

Recline to one of five desired positions and keep it there with the push of a button.

Safety Casters

Two-point stem, shock absorber, and special bore construction provide an extremely smooth and quiet swivel and roll not found in standard casters. Once the chair is sat in, the brake is released and allows the chair to roll freely. This is important for larger people who may need to put weight on the arms to lower themselves into the seat. Spring shock absorber prolongs the life of the caster as well as the chair. Closed Construction reduces the amount of dirt and hair that can get into the caster, prolonging its life.

Cut-Away Sides

Whether your duty belt is a sidearm or a radio, the cutaway sides allow you to sit more comfortably, allowing most equipment on the duty belt to hang free without poking into your back while seated.

Replaceable Covers

Make your chairs new again by swapping out covers and extending the life of your 24/7 chair all within a matter of minutes. The bottom cover is held on by Velcro and the backrest cartridge can be swapped out easily with a screwdriver.

3120 Split Back Office Chair Options

Partial Footring Base

Provides a ledge on which shorter users can rest their feet without alienating taller users, who can simply rotate the ledge out of the way.

This additional accommodation means nearly all body types can use the same chair.

Pivot Armrest

Pivot armrests are designed for maximum comfort and flexibility. Raise or lower the arms to your preference or easily pivot the armrests forward or backward when not needed.

3120 Split High Back Cover Materials

Alternative Leather - Black

Alternative Leather - Air Force Blue

Alternative Leather - Poppy Red

Staccato Fabric - Black

Staccato Fabric - Red

Staccato Fabric - Slate

Staccato Fabric - Navy

Staccato Fabric - Burgundy

Cordura - Black

ESD - Anthracite

ESD - Cobalt

ESD - Graphite

Leather - Black

Leather - Firebrick Red

Leather - Midnight Blue

Leather - Burgundy