Black Friday sale sitewide through 11/24!

M Series Desk


Looking for a different type of desk of outstanding quality and contemporary design?  The HAT Collective M Series is one of the best desks you want to consider in 2021. 

Top commercial grade, this desk exceeds safety, performance & durability standards. It is backed by an amazing 7 year warranty for peace of mind. You will keep moving for years ahead, keeping you healthy and productive! Best part some customization options are in stock and ship within 1-3 weeks. Start personalizing your desk now!


+ M Series is available in multiple weight capacities, work surface shapes, and base designs.

+ The Constant Force system makes it simple to change the height of your table to best fit your comfort, from sitting to standing

+ A safety brake with an integrated locking mechanism keeps the table in place.

+ Easily cleaned and disinfected between users.

+ High-end finish & sturdy construction backed by 10 Years on parts and a Lifetime of Craftsmanship for peace of mind

+ Easy to clean and disinfect

+ Exceeding all sustainability and safety standards. Wood Screens & Surfaces FSC-Certified,  powder coat work surfaces made with 100% recycled wood & 100% recyclable.  All surfaces are CARB II-compliant & formaldehyde-free. Meets ANSI/BIFMA standards & listed to UL 962 for fire rating.



    Constant Force (hydraulic piston)


    Bowtie, Large Clover, Organic H

    Height Range

    27.6 in. – 44.1 in.


    Safety brake with integrated locking mechanism

    Weight Capacity Column (incl desktop)

    UL: 15 – 32 lbs., UPL: 33 – 46 lbs., L: 47 – 63 lbs., M: 64 – 81 lbs., H: 82 – 105 lbs.

    Worksurface Shape


    Worksurface Size

    30 in. x 24 in., 30 in. x 30 in., 36 in. x 24 in., 36 in. x 30 in., 42 in. x 24 in., 42 in. x 30 in., 48 in. x 24 in., 48 in. x 30 in., 54 in. x 24 in., 54 in. x 30 in., 60 in. x 30 in.

    Once you place your order we will reconfirm with you the usage of your desk to make sure they weight capacity for the Constant Force system fits you day to day use. See specification sheet for further information

    Base options

    Depending on the side and shape of your worksurface, the base options change to ensure stability.


    Color rendering

    Computer monitors are not all calibrated equally and color reproduction on the Internet is not precise. Since it is not possible to guarantee our online colors will look the same on all computers, we do not guarantee that what you see accurately portrays the color of the actual product. However we give you as many high quality pictures as possible to give you the closest rendering.

    Shipping & Returns


    The item ships within 1-3 weeks.

    DAMAGE — Seller is not responsible for damage that occurred in transit or during storage. Before accepting a shipment from the carrier, the Customer (and/or their designated receiver) is to carefully review the packing list and inspect the quantity and condition of the items. For any external damage, Buyer should document all damage on the Bill of Lading and request a carrier inspection of the product.


    a. It is the customer's responsibility to examine goods upon receipt and to notify Seller with any concerns. Any claims against Seller for apparent defects, errors or shortages must be made by the purchaser within three (3) working days after any receipt date. Failure by the Buyer to make any claim against Seller within (3) days shall constitute acceptance of the goods and waive of any apparent defects, errors or shortages. 

    b. DEFECTIVE ITEMS — Defective items may be returned within limits of the Warranty.

    c. CUSTOM-CONFIGURED ITEMS — Non-defective Custom-configured Items are not returnable.

    d. RETURNS — HAT Accepts no returns as the Fiello is custom made. 


    HAT Collective offers a Lifetime warranty on the mechanical parts of the product and a 7 year warranty on the motors and electric elements. This is one of the best warranties you’ll find in the industry and underscores the confidence we have in the quality of our product. 

    HAT warrants that its products will be free from defects in material and workmanship when the title passes to the buyer. Seller will repair (only pre-approved labor and service costs are covered under this warranty) or replace (or issue a pro-rated credit if a similar product is no longer available), at its discretion, any defective product without charge (shipping charges excluded).

    HAT may require proof of purchase before performing any repairs or replacing any products during the warranty period. Except as specifically set forth above, HAT makes no warranties, express or implied and specifically disclaims any warranty of merchantability or fitness for a particular purpose. Repair or replacement of the product ordered from Seller shall be buyer’s exclusive remedy.
    HAT will not be responsible for incidental or consequential damages.


    • Damage caused by a carrier.
    • Labor charges.
    • Normal wear and tear.
    • Defects caused by failure to follow instructions related to the product’s installation or intended use.
    • COM or other third party materials applied to the products. Products subjected to improper use and conditions.
    • User modification of, or attachments to the product, including application of your own materials
    • Damage resulting from misuse, negligence, accident or alteration.

    *Normal use consists of a 5 day, 40 hour work week.

    This warranty shall be effective for the applicable time period starting from date of purchase as shown on your original receipt or other proof of purchase. The warranty covers the original purchaser of the product.

    About HAT

    HAT Collective's Sis Ergo pioneered the first height-adjustable table 50 years ago

    HAT Collective offers a broad range of design-forward, ergonomic solutions for the contract office market now available to residential use. Their lines celebrate thoughts and ideas, coming together to push the limits under the name of HAT Collective.

    HAT Collective's products showcase craftsmanship, functionality, and innovation in design. They remain committed to quality and affordability as we endeavor to revolutionize well-being and productivity in the workplace.

    Providing quick shipping and highly customizable product options, HAT Collective places an emphasis on customer service.

    HAT Collective's SiS-USA Inc. workstations and accessories are designed to meet the most stringent worldwide ergonomic criteria

    Environmental Policy

    HAT Collective's SIS policy is to continuously reduce the environmental impact of products and processes. SIS seeks to achieve this through better use of raw materials and energy and by optimizing our production processes.

    HAT Collective actively protect and maintain the environment in the vicinity of the company. The company also prioritizes environmental considerations when re-developing products through choice of materials and processes. Employees are included in the environmental process to increase motivation to create good workplaces and environmentally friendly products. Material usage is optimized to reduce waste and environmental impact.