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Alera Merix450 Series Mid-Back Mesh Big and Tall Office Chair

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Alera® Merix450 Series Mid-Back Mesh Big and Tall Office Chair

Aesthetically stylish for superior sitting experience for users up to 450 lbs. Breathable fabric mesh back with super cushioned mesh fabric seat. Integrated lumbar support encourages ideal back posture. Removable padded armrests offer soft support. Durable, heavy-duty base with casters.


  • Arms included: Yes
  • Arm style: Padded T-Bar
  • Pneumatic seat height adjustment: Yes
  • Tilt Tension/Tilt lock: Yes
  • Seat/Back color: Black
  • Warranty: 5 Years

Product Details:

  • Product Type: Task chairs
  • Style: Contemporary
  • Base Material: Plastic
  • Armed: Yes


  • Overall: 29.125" W x 25.5" D
  • Minimum Overall Height - Top to Bottom: 39.13"
  • Maximum Overall Height - Top to Bottom: 42.75"
  • Overall Product Weight: 52.8lbs

Alera® Merix450 Series Mid-Back Mesh Big and Tall Office Chair

Additional Documents


Weights & Dimensions

Adjustable Seat Height

  • Minimum Seat Height: 19.625"
  • Maximum Seat Height: 23.25"

Additional Weights & Dimensions

  • Overall: 29.125" W x 25.5" D
  • Seat: 23.25" W x 20.875" D
  • Minimum Overall Height - Top to Bottom: 39.13"
  • Maximum Overall Height - Top to Bottom: 42.75"
  • Overall Product Weight: 52.8lbs


Product Type: Task chairsStyle: Contemporary
Base Material: PlasticExterior Seat Material: Fabric; Mesh
Back Height: Mid-backBig and Tall: Yes
Adjustable Height: YesTilt Control: Yes
Casters: YesArmed: Yes
  • Arm Type: T-bar; Padded
Weight Capacity: 450Commercial Use: Yes


ANSI BIFMA Compliant: Yes 

About the Manufacturer

Simply Smarter Conventional wisdom holds that outfitting an office with top-quality furniture and accessories usually comes at a hefty price. But with Alera, you don't have to sacrifice the performance and style you want just because of budget constraints. Continuous production monitoring and a 100% satisfaction guarantee let you buy Alera with complete confidence in the quality of every desk, chair, bookcase and pedestal we make. And because it's priced right, you'll be pleasantly surprised at just how far your budget can go. Best of all, every Alera item is in-stock and ready for immediate delivery to help you create the perfect office today - not weeks or months from now. Raise your expectations. See why Alera is simply smarter.

All Alera office products will enclose your office with a new look with its sleek and modern style. From chairs, to desks, to storage units, and conference tables, Alera will not dissapoint. Alera is also known for being kind to the environment and using recycled material when possible. They also offer a variety of cleaning solutions to make your office furniture last and make each piece look as if it is brand new.


The Merix450 Series Mid-Back Mesh Big and Tall Office Chair is a Contemporary style product. Contemporary style bridges the gap between traditional and modern. Pieces feature simple and clean lines with smooth surfaces without any carving or adornment. You can shop for more Contemporary Office Chairs in the Office Seating section of our site.

Alera® Merix450 Series Mid-Back Mesh Big and Tall Office Chair

Questions & Answers (2)


“Hi, what are the dimensions of the chair's seat?” asked by Connie

"Hi Connie, this chair has a seat width of 23 1/4", and a seat depth of 20 7/8"." Tyler from Wayfair


“Hi, what is the weight limit of this office chair?” asked by Ray

"Hi Ray, the weight limit of this office chair is 450 lbs." Tabor from Wayfair

Still have questions about this product? We're here to help

When you buy a Alera Merix450 Series Mid-Back Mesh Big and Tall Office Chair online from Wayfair Supply, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Alera Part #: ALEMX4517 here. If you have any questions about your purchase or any other Office Chairs product for sale our customer service representatives are available to help.Whether you just want to buy a Alera Merix450 Series Mid-Back Mesh Big and Tall Office Chair or shop for your entire business, Wayfair Supply has everything you need.
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Customer Reviews

Tell Us What You Think!

Tell us what you think about the Merix450 Series Mid-Back Mesh Big and Tall Office Chair. It will help us provide you with better products in the future and help your fellow Wayfair shoppers make better purchases.

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Average Overall Rating
(based on 16 reviews)

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from Hilliard, OH – Verified Buyer

This chair was purchased as a gift for a larger man working 8+ hours daily. His first comment was how sturdy it was when putting it together. There were no problems with those few steps which is a definite plus. It was received a month ago and he loves it. Primary praise is that it is cool and comfortable and sturdier than anything else he has ever tried. Very happy with the purchase and highly recommend!

Was this helpful? Yes2 No0

Great, but...

from Texas – Verified Buyer

The chair is very well-made. The only thing I really don't like about it is the height of the lumbar support is fixed. It doesn't hit me right where I need it! If you could adjust it up or down, it would be a really great chair. All told, though, it works very well and is very sturdy,

Was this helpful? Yes1 No0

Good chair no complaints

from Allentown, PA – Verified Buyer

I purchased this chair for a larger man in our office a few months ago, and he has been very happy with it. He says it's comfortable and sturdy.

Was this helpful? Yes2 No0

Very good value

from Cincinnati, OH – Verified Buyer

Easy to put together. Only took about 20 minutes. Very comfortable. I like the mesh back that lets air pass through. Only reason I didn't give it the extra star is that it does seems difficult to move on carpet.

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Affordable comfort

from CONCORD, CA – Verified Buyer

Very good comfort for a large man like myself. 6'5" tall and 300+ lbs. Good all day support.

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from Durham, NC – Verified Buyer– Top 1000 Reviewer

Good quality chair for a workplace where some employees that may be over the weight threshold.

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Love this Chair

from Lakewood, CO – Verified Buyer

This chair is comfortable and sturdy. I bought it for use at work and I sit sometimes up to 8 hours per day. Definitely will last.

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from Fort Scott, KS – Verified Buyer

My husband loves it. The perfect size for him. The seat is so thick and soft. Great product. Recommend it.

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Great Choice

from United States – Verified Buyer

Sturdy, stylish and affordable. Have seen chairs at another place made for big people that have a very high cost.This chair was a snap to put together and I'm just very happy with it. A great buy.

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Well worth the money!

from Fargo, ND – Verified Buyer

My husband is a big man and we have been looking for a chair that will support his weight and be comfortable at the same time. He loves this chair! He is able to push in the arms to get out and not worry about them breaking.

Was this helpful? Yes1 No0

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Merix450 Series Mid-Back Mesh Big and Tall Office Chair is also sometimes listed under the following manufacturer numbers: ALEMX4517