Description
Delta Series
The Delta was specifically developed by an ergonomist for individuals with less pronounced curvature, whose preference or stature demands broader back and shoulder support. The design of this ergonomic chair focuses on the lumbar region, providing extended back support with minimal vertical and horizontal curve. Both the high and mid back sizes incorporate our internal ratchet system to allow height adjustment in 1/2" increments from the seated position.
The Delta also boasts our classic stitching detail on the seat and back. Other options available on the Delta include an air pump adjustable lumbar and/or adjustable headrest on the high back models.
Mechanism
BUILT2LAST™ mechanisms have been customized to ensure that the tilt ranges and back angles match perfectly with our proprietary J-Bar designs to achieve proper ergonomic range and seat to back relationships. Adjustable arm bracket mounts are welded directly to our controls to ensure their strength and exact location.
| #2 Posture | #3 Multi-tilt | #5 knee-tilt | #8 forward knee-tilt | #9 synchro-tilt | |
| Seat tilt rearward | 6° | 20° | 15° | 15° | 8° |
| Seat tilt forward | -6° |
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0° | -6° | -2° |
| Seat pivot point | center | center | forward (knee) | forward (knee) | forward |
| Tilt lock | no |
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| Back angle adjustment | 11° rearward | 16° rearward | 16° rearward | 16° rearward | 16° rearward |
| Back height adjustment | 4" ratchet | 4" ratchet | 4" ratchet | 4" ratchet | 4" ratchet |
| Seat depth adjustment |
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Seat Depth Adjuster
The seat depth adjuster is fully integrated on the #3 Multi-Tilt, #5 Knee-Tilt, #8 Enhanced Forward-Tilt / Knee-Tilt and #9 synchro tilt controls. This feature allows individuals to fine tune their seat depth by 2.5" in .5" increments while remaining seated. The ability to achieve the correct seat to back depth relationship dramatically enhances posture, support and circulation to the legs
#1 Swivel Tilter (meeting/conference)
Independent adjustments for seat height and combined seat/back angle are both easily activated by labeled easy to reach PictoPaddles. Back
height adjustments can be made in 1/2" increments while seated, with our internal ratchet system
#2 Task Mechanism
Independent adjustments for seat height, seat angle and back angle are all easily activated by labeled easy to reach PictoPaddles. Back height adjustments can be made in 1/2” increments while seated, with our internal ratchet system
#3 Multi-Tilt
Independent adjustments for seat height, seat angle, back angle, integrated seat depth adjuster, plus swivel tilt and infinite tilt lock. This allows the user to position the chair in any stationary position throughout its tilting range. The forward tilt dial allows the user to choose a resting seat angle of 3½° rearward , or a forward incline of 5° or any value in between. Back height adjustments can be made in 1/2” increments while seated, with our internal ratchet system.
#5 Knee-Tilt Control
The Knee-Tilt mechanism includes most of the same features of the Multi-Tilt, with the additional benefit of an enhanced forward pivot point and also includes the integrated seat depth adjuster. This allows the operator to easily recline in the chair while keeping their feet firmly planted on the floor. Back height adjustments can be made in 1/2” increments while seated, with our internal ratchet system.
#8 Enhanced Forward-Tilt Knee-Tilt Control
The Enhanced Forward-Tilt / Knee-Tilt mechanism includes all of the features of the #5 Knee-Tilt, with the additional benefit of enhanced forward tilt to a maximum of 6° forward and also integrated seat depth adjuster. This allows the operator to easily recline in the chair while keeping their feet firmly planted on the floor as well as the ability to put the seat pan into a forward tilting mode allowing for a more open trunk to thigh angle which results in a healthier more lordotic spinal curve while seated. Back height adjustments can be made in 1/2” increments while seated, with our internal ratchet system.
#9 Synchro-Tilt Control
The Synchronous (Synchro)-Tilt mechanism is a unique action unit that closely mimics the body's natural pivot points at the hip, knee and ankle for a comfortable and fluid seated experience. The back to seat ratio of 1.87:1 makes the act of reclining (with feet firmly planted on the floor) and returning back to an active working posture effortless and completely natural. This mechanism also has the ability to alter the back to seat relationship with its back angle control lever and integrated seat depth adjuster. Back height adjustments can be made in 1/2” increments while seated, with our internal ratchet system.
For more guidance in choosing which of our mechanism choices is right for your application read below:
The seated body has natural pivot points at the hip, knee, and ankle. The ideal work chair will mimic as closely as possible those pivot points, thus allowing the sitter to move naturally and with ease around the chair’s engineered pivot points. The pivot points within the user’s body and the movement of the chair should work together to create a tilt movement that doesn’t stress or lift the body. The type and engineering of a work chair’s tilt will make the difference between dynamic and static seating. A chair with a center tilt pivots around a point under the center of the chair’s seat. In this simple design, the chair’s back and seat usually move together in a 1:1 ratio. This means the sitter’s feet will come off the floor when leaning back, and it will be difficult to hold a reclined position in any relaxed fashion. Because the sitter’s feet come off the floor, the chair with center tilt will give the seated user a feeling of instability.
A chair with a knee tilt pivots the chair’s seat around a point under the seat and behind the user’s knees. The user’s feet will stay on the floor, which lends greater stability and provides user control over the recline action of the chair. A chair with a knee tilt pivots the seat and back, though not necessarily at the same rate. Because the seat-to-back ratio is still fairly even, the user’s body angles will not comfortably open and relax when reclining, increasing the chances for muscle fatigue and restricted circulation. A chair with a hip pivot rotates the backrest around a point located near the user’s hips. This point, which is between the chair’s seat and back, helps the user to maintain full contact with the chair’s seat and back through the full range of recline. The chair’s pivot closely mimics the body’s hip when the sitter tilts back in a chair. A synchronous tilt establishes a prearranged relationship between the movement of the chair’s seat and back. This relationship allows the body to open up as the user reclines. A work chair that has a synchronous tilt and can closely approximate the ankle and hip pivots of the body may provide a comfortable and relaxed experience for the sitter.
- To place a custom order please contact customer service