Allseating L1 Midback Task Chair

Allseating L1 Midback Task Chair

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Shipping ETA 4-5 weeks

Description

Allseating L1 Midback Ergonomic Task Chair

The Allseating L1 Midback Task Chair delivers practical ergonomic support without unnecessary complexity. This configuration combines a breathable mesh back, adjustable lumbar support, synchro tilt and height-adjustable arms in a comfortable commercial office chair rated for users up to 350 lb.

Designed for everyday office use, the L1 provides the adjustments most users need while remaining straightforward to set up and operate.

 

Features

  • Breathable mesh midback provides flexible support and airflow
  • Adjustable lumbar support can be positioned to suit the individual user
  • Synchro-tilt mechanism coordinates seat and back movement while reclining
  • Integrated seat slider adjusts seat depth for different leg lengths
  • Height-adjustable armrests support different users and desk positions
  • Supportive moulded foam seat
  • Waterfall seat edge helps reduce pressure beneath the thighs
  • Medium seat provides comfortable proportions for a broad range of users
  • Pneumatic seat-height adjustment
  • Commercial task-chair construction for everyday workplace use
  • Rated for users up to 350 lb.
  • Meets applicable ANSI/BIFMA office seating requirements
  • Made in Canada

 

Need 20, 50, 200 or more? Connect with us for further pricing considerations on larger Allseating L1 orders.

 

Ergonomic Support Without Too Many Controls

The L1 is designed around useful, approachable ergonomic adjustment rather than giving the user a collection of controls they may never touch.

This Midback configuration provides adjustable lumbar support, seat-height adjustment, synchro tilt and height-adjustable arms, giving the user control over the areas that have the greatest effect on everyday chair fit.

The integrated seat slider allows the seat depth to move forward or backward, helping users with different leg lengths find better support beneath the thighs without excessive pressure behind the knees.

Adjustable Lumbar Support

The mesh back includes an adjustable lumbar support that can be moved vertically to better match the position of the user’s lower back.

The L1 name itself takes inspiration from the first lumbar vertebra, fitting for a chair designed around comfortable lower-back support.

Synchro Tilt for Natural Movement

The synchro-tilt mechanism coordinates the movement of the seat and backrest as the user reclines. The back moves through a greater angle than the seat, allowing a more natural change in posture while keeping the feet closer to the floor.

This makes it easy to move between upright computer work and a more relaxed position without operating several separate chair controls.

Breathable Midback Design

The mesh back allows airflow while providing flexible support through the working day. The Midback design supports the lower and middle back without extending as high as a traditional high-back chair.

For many task-chair users, this provides a good balance between back support, movement and a visually lighter chair.

Height-Adjustable Arm Support

The armrests can be raised or lowered to better support the forearms while working. Correct arm height can help the shoulders remain more relaxed and can make it easier to position the chair comfortably at a keyboard or desk.

A Practical Chair for Individual or Shared Workstations

The straightforward adjustment and commercial construction make the L1 Midback suitable for private offices, open workstations, shared desks and home offices.

Its 350 lb. user rating also gives the chair useful capacity while maintaining the proportions of a conventional task chair.

 

Frequently Asked Questions

Does this Allseating L1 include adjustable lumbar support?
Yes. This configuration includes adjustable lumbar support that can be repositioned vertically behind the mesh back.

Does the Allseating L1 recline?
Yes. This chair uses a synchro-tilt mechanism that coordinates seat and back movement as you recline.

Are the armrests adjustable?
Yes. This configuration includes height-adjustable armrests so the arm position can be changed to suit the user and workstation.

Does this L1 include a seat slider?
Yes. This configuration includes the integrated seat slider, allowing the seat depth to be adjusted forward or backward for different leg lengths.

Does this chair include a headrest?
No. This product is the standard L1 Midback configuration without a headrest. Other L1 configurations may be available through Allseating for customers requiring additional options.

Is the Allseating L1 suitable for larger users?
The L1 Midback is rated for users up to 350 lb. Chair fit also depends on seat width, depth and the individual’s proportions, so reviewing the Specifications tab before ordering is recommended.

Does the chair require assembly?
Yes. This configuration ships knocked down and requires assembly.

Can we order L1 chairs for a larger office project?
Yes. Contact atWork for current lead times, project pricing and assistance coordinating larger quantities.

 

Visit Allseating’s chair builder for in depth customization.

Part of the versatile L1 series—available in Midback, Highback, and Counter Height Stool options

Dimensions
Depth Seat: 17.5" - 22" H
Width Seat: 20" W Back: 19.5" W
Height Back: 21.5" H - Overall: 38.5" - 43" H
Chair Details
Capacity 350lbs
Details
Model L1024-WA-___-___-MED-LU-SS-KD-AS-F-_____ x1
Warranty PDF Limited 12 year Warranty
Made In Canada

atWork For You!

chris C.
1 month ago
The team at Lovers at Work were incredible to work with right from start to finish. Our salesman Aaron Walter's is top notch. Informed, professional and quick to act on every and any request no matter how big or small. The delivery team, top notch, knowledgeable, efficient, great customer service all reound. We couldn't be happier with the products we've purchased. Both new and gently used have met or surpassed our expectations. Products and customer service excellence. As a not for profit, pricing is important to us and our stakeholders. We have to be thrifty and responsible with every purchse. Lovers always found a way to satisfy our budget. The staff and I at South Gate Centre, highly recommend Lovers at Work. We will continue to use their services for all of our furniture needs.
Jen H.
1 month ago
We had a great experience choosing a new home office chair with James today. He explained the features and benefits of the chairs to us and allowed us some free time to test them out at the desks. Very positive experience!
paul D.
2 months ago
Great product and customer experience! I had been searching for a couple of years for an office chair that I actually found comfortable as I frequently have back pain and leg issues. 2 weeks ago I found it. The staff was helpful with information but not pushy, which I appreciated so much. And my new chair is excellent! Thank you Mark and Andrew!
Rodrigo B.
2 months ago
Mark was very knowledgeable and helpful. Found a good deal!
Ken & Gail H.
2 months ago
Over several useful iterations, atWork prototyped a locker customization that allows members of our curling club to stow curling brooms from both top and bottom half lockers. James Tauschek was very responsive and helpful from first contact, through prototyping and to a followup, post-installation. The lockers are of good quality, the curling broom solution is just what we needed and we are very pleased!
Denise C.
2 months ago
I purchased my Humanscale Ergonomic Under Desk Foot Rest - HUM Natural Wood from atWork Office Furniture and am so very pleased with the quality of the product and the exceptionally fast and courteous service I received. My Under Desk Foot Rest has made the long hours I spend at my Computer and Desk so much more bearable, relieving back pain as well as aching in my legs and feet. I especially love the ability to rock the foot rest and adjustable Foot Rest height. I highly recommend this Desk Foot Rest and especially the great service provided by atWork Office Furniture. Thank you for a great shopping experience
Franck L.
3 months ago
Top tier customer treatment and service
Emil S.
3 months ago
I had a very positive experience with Jeff's atWork Office Furniture and the broader atWork organization. I bought an office chair a few months ago. The shopping experience was very good at Jeff's. Debbie was very helpful. I ended up ordering online because I needed it shipped to a different occasion. After a few months the chair developed some problems, but was still under manufacturer's warranty. I contacted Jeff's and they were very helpful dealing with the issue and handling the communications with the manufacturer. A replacement part was shipped to me promptly via Purolator and things are back to normal. Many thanks to Debbie B., Melanie O. and Laura B. for their help! I will not hesitate to do business with atWork in the future.
Sandy T.
4 months ago
From start to finish, our experience with Lovers atWork Office Furniture was stellar! The new designs for our Principal's office layout and furniture were beautiful, the delivery of the new furniture was fast, and the team who delivered and set up our office was friendly and professional. Our Principal's office now looks amazing with all of the new furniture! The work station is streamlined, practical, and beautiful, and the soft seating area for school guests is wonderful. The atWork team helped us pick the perfect colours to compliment our school logo and the new furniture is not only comfortable, but it is also durable. Thank you to James, Abby, Rodney, and the entire team at Lovers atWork Office Furniture!
Jason G.
4 months ago
Today we received our new conference room table. The delivery from time of order was on time and the two professionals (STEVE & MAT) arrived and moved our old conference room table and installed the new one. They were very customer service friendly and respectful. If we ever need more furniture we will look to Blair's atWork Office Furniture again without hesitation.
Tim A.
4 months ago
We recently had Matthew and Daniel from Blair’s atWork deliver and install furniture for us, and their service was exceptional. They were professional, friendly, efficient, and went above and beyond to make sure everything was set up perfectly. They took great care with the installation, were helpful throughout the process, and made the whole experience smooth and stress-free. Outstanding customer service from start to finish. Thank you, Matthew and Daniel!
이지현
4 months ago
I’ve never experienced better customer service. They truly exceeded my expectations, and their prompt responses were especially impressive.
Harun H.
4 months ago
It was a pleasure to deal with Lisa, Will and all the installers from atWork. They had the best price available for the furniture pieces we needed. Lead times were a bit long, but they disclosed that early on in the conversations. Even when there was a hiccup on the first delivery date, they worked diligently to ensure it was scheduled back in ASAP. Highly recommend and will be back for our next office furniture purchases.
margaret H.
5 months ago
Hard a large selection
kayleigh D.
5 months ago
Purchased lockers on behalf of my workplace through Lover's atWork, and am super pleased with the entire process. They are very knowledgeable, patient while requesting quotes, and easy to get into contact with. They are honest with lead times, and our goods arrived even quicker than expected. Definitely recommend for all of your furniture needs, it was overall a very seamless purchasing experience!
Kimani L.
5 months ago
Luke Howkins, Operations Manager at AtWork, delivered. He took the time to understand our office needs and provided clear, effective solutions for our new layout. No guesswork—just solid advice and execution. Professional, efficient, and results-driven. Would work with him again without hesitation. —
Bradley H.
6 months ago
Awesome team and great prices. Easy ordering process from a large selection and the delivery team was fantastic. Aaron is the man and hooked us up with everything we needed.
Kyle M.
6 months ago
New furniture looks great and service was excellent!
Vash
7 months ago
Incredibly helpful and accommodating. Large selection of desks and chairs, with beautiful options for customization. They kept me aware of the shipping and delivery process and put everything in place upon arrival, setup ready to use. If I need further furnishing for my new career, I know where I'll be going. 10/10
Mike D.
7 months ago
Love the chair, built very well and light.Also nice and comfortable!