Copyright 2016 United Group inc. All rights reserved.
United Group, Inc. 13700 Polo Trail Drive, Lake Forest, Illinois 60045
(847) 816-7100 Fax: (847) 816-7102

OFFICE CHAIR PRODUCTS / 4000 SERIES

Our top-selling model. The IRON HORSE 4000 Series is weight rated for users up to 400 lbs.

 

 

DOWNLOADS >>> PRODUCT INFORMATION SHEET >>> WARRANTY INFORMATION >>> PRODUCT COMPARISON CHART

Main Features

  • NEW! HD TILT MECHANISM
  • NEW! FNEW CERTIFIED, CLICK HERE FOR TESTING AND MODEL COMPONENT DETAILS
  • ADJUSTABLE DELUXE COMFORT HEADREST
  • ADJUSTABLE SEAT BACK, ANGLE TO 21°
  • 2D ARMRESTS, HEIGHT/WIDTH ADJUSTABLE
  • ADJUSTABLE AIR LUMBAR SYSTEM
  • HEAVY DUTY GAS SHOCK, HEIGHT ADJUSTABLE
  • HEAVY DUTY 5 STAR BLACK COMPOSITE BASE WITH DOUBLE WHEELED CASTERS
  • CLICK HERE FOR DIMENSIONAL DRAWING

 

User Ratings

  • WEIGHT RATING: 400 LBS.
  • USER HEIGHT: 5’9”-6’5”

 

Optional Features

  • CLICK HERE FOR ARMREST OPTIONS DETAILS
  • CLICK HERE FOR CUSTOM EMBROIDERY & CUSTOM TRIM DETAILS
  • CLICK HERE FOR BASE OPTIONS DETAILS
  • CLICK HERE FOR HEADREST OPTIONS DETAILS

Markets

> 911 Dispatch

> Control Room

> Chemical

> Energy

> Oil Rigs

> Refineries

> Government

> Financial

> Education

> Home

> Executive

4000-Leather-Front-HD-Tilt-Mech
4000-Leather-Profile-Right-HD-TILT-MECH
4000-Leather-Qtr-Front-Left-HD-Tilt-Mech
4000-Leather-Qtr-Front-Right-HD-Tilt-Mech

Warranty

10 YEARS ON FRAME

5 YEARS ON STRUCTURAL COMPONENTS

3 YEARS ON COVERS, FOAM AND ARMRESTS

FEATURES BREAKDOWN

SEAT HEIGHT

 

 

A proper seat height stabilizes your ergonomic experience. The ideal height is achieved when the seat cushion rests just below the bend of your knee; this supports your legs and creates a sturdy foundation for the rest of your body.

4000-S3

With no weight on the seat cushion, pull the paddle upwards to increase the height of your seat cushion in relation to the ground.
4000SS-S3-Seat-Height-a

To lower the seat height, pull the paddle up and place pressure on the seat cushion.

4000SS-S3-Seat-Height-b

BACKREST RECLINE

 

 

To successfully adjust your IRON HORSE 4000 Series to fit your specific body type, the first step is to adjust the backrest tilt to your preference.

4000-S1

Sit firmly with your back planted against the backrest. Squeeze inflatable air lumbar bulb to fill the bow-tie lumbar with air until desired.
4000SS-S1-Backrest-Recline-aTo release the bow-tie lumbar chamber of air, press the button located to the side of the inflatable air lumbar bulb.

4000SS-S1-Backrest-Recline-b

AIR LUMBAR

 

 

The air adjustable lumbar provides support for your lower back. An ideal setting will promote good posture by supporting the natural inward curvature of the spine.

4000-S2

Sit firmly with your back planted against the backrest. Squeeze inflatable air lumbar bulb to fill the bow-tie lumbar with air.
3000-S2-aTo release the bow-tie lumbar chamber of air, press the button located to the side of the inflatable air lumbar bulb.3000-S2-b

TILT TENSION

 

 

The tilt mechanism tilts the entire upper portion of your IRON HORSE Office Chair within a 24° axis. This is designed to reduce the pressure on discs and muscles, allowing you to maximize your ergonomic experience. The tilt tension adjustment knob increases or decreases the tension involved in this maneuver.

4000 Tilt Tension whole Chair

To increase the tension in the tilt mechanism, rotate the tilt tension adjustment knob away from the chair while seated.
Tilt Tension Up

To decrease the tension in the tilt mechanism, rotate tilt tension adjustment knob towards the chair while you are seated.
Tilt Tension Down

TILT LOCK

 

 

The tilt mechanism tilts the entire upper portion of your IRON HORSE Office Chair within a 24° axis. This is designed to reduce the pressure on discs and muscles, allowing you to maximize your ergonomic experience. The tilt tension lock provides you seven different positions to of tilt recline to lock your chair into.

4000-S5

Pull the paddle upwards to lock the tilt mechanism into place. There are an infinite range of locking positions and a total of 24° of recline.
4000SS-S5-Tilt-Lock-a

While applying pressure to the backrest, pull the paddle upwards to unlock the tilt mechanism to its natural state.

4000SS-S5-Tilt-Lock-b

HEADREST

 

 

Both the Standard and Deluxe Comfort Headrest allow for height adjustment at different locking levels. The Deluxe Comfort Headrest offers an infinite range of angled positions to fully support the neck and shoulder areas.

4000-S7

Lift to raise the height of the headrest. Height will lock into desired position. Press button and push headrest down to lower the height of the headrest.
4000SS-S7-Head-Rest-a
Apply pressure to the front portion of the Deluxe Comfort Headrest to raise or lower to fit your liking. Only for chairs equipped with the Deluxe Comfort Headrest.

4000SS-S7-Head-Rest-b

2D & 4D ARMREST

 

 

Armrests support the weight of your arms, removing stress from your shoulders and upper arms. The 2D Armrest is height adjustable while the 4D Armrest is height, width and angle adjustable.

4000-S8

Push and hold button to raise or lower armrest.
4000SS-S8-Arm-Rest-aHold lever and rotate armrest cushion for full 360° articulation.4000SS-S8-Arm-Rest-bPush armrest in or out to freely adjust the width.

4000SS-S8-Arm-Rest-c

HD TILT-UP ARMREST

 

 

Armrests support the weight of your arms, removing stress from your shoulders and upper arms. The HD Tilt-Up Armrest allows you to adjust the angle that it rests at, you can even raise it completely out of your way.

4000-S9

To adjust the angle that the armrest will lock at, place your armrest at its desired angle and spin the wheel (located underneath the armrest) towards the inside of the chair to lock it into place.

4000SS-S9-Tilt-Up-Armrest-aTo unlock the position of the armrest, spin the wheel towards the outside of the chair.

4000SS-S9-Tilt-Up-Armrest-b