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Ergotron 33-444-921 WorkFit-TLE Sit-Stand Desktop Workstation

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Product ID: 18936
Recommended Accessories
List Price: $800.00
Our Price: $430.00
Shipping: $150.00 *
* applies to Contiguous United States


The enhanced Ergotron 33-444-921 WorkFit-TLE sit-stand desk offers a large, drop-down keyboard tray for improved ergonomics when sitting and a convenient station for mobile devices. A cable management tray behind the monitor keeps cords organized and out of the way.

Like the WorkFit-TL, it maximizes work space as it moves straight up and down to quickly convert a tabletop into a healthy sit-stand workstation. To improve the ergonomic vertical positioning between the monitor and keyboard tray, we recommend using a monitor riser accessory - Ergotron 97-904 for adding dual monitors and 97-905 for single LD monitor and 97-906 for single HD monitor. 

Technical Drawing

Technical Drawing for Ergotron 33-444-921 WorkFit-TLE Sit-Stand Desktop Workstation

Technical Specifications

LCD size Capacity Lift Tilt Pan Rotation VESA
Screen Capacity Lift Tilt Pan Rotation VESA
Up to 30"

10-40 lbs

4.5-18.1 kg


38.1 cm

- - - -

Product Information

Part Number 33-444-921
Description WorkFit-TLE Sit-Stand Desktop Workstation (black surface with black frame)
  • WorkFit-TLE

  • Cable management clips with adhesive

  • Cable ties

  • Cable wrap

  • Monitor pads

Ships Fully assembled; no tool-adjustments needed for installation
Keyboard Tray Is positioned 3.5" (8.9 cm) below worksurface to maintain ergonomic spacing between screen height and keyboard while seated
Footprint 37.4" x 35.8" (95 x 85 cm)
Fits On desk surfaces 24" (61 cm) deep or larger
Keyboard Tray Size 35" (88.9 cm) wide, depth will vary but minimum 8" (20.3 cm) deep where the ends extend beyond the feet of the unit
Displays Can be placed directly on the worksurface
Weight Capacity 10 to 40 lbs (4.5 to 18.2 kg)
Product Weight 59 lbs (26.8 kg)
Shipping Dimensions 43" x 12" x 39" (109 x 30.5 x 99 cm)
Shipping Weight 73 lbs (33.1 kg)
Warranty Five (5) years


  • Allows you to easily modify an existing office space or cubicle by adding a WorkFit-TLE to an open tabletop without the cost of expensive professional installers

  • Features a large drop-down keyboard tray that drops below desk height for a comfortable and ergonomic fit while sitting

  • Keeps mobile devices within reach with the integrated tablet/cell phone station built into the work surface (with removable tray cover)

  • Saves space and keeps your workstation organized with a rear cable tray that can be easily removed with two thumb screws

  • Works well with an accessory monitor mount kit that attaches your display(s) with a riser to provide independent screen adjustment

  • Provides 15 inches (38 cm) of vertical adjustment

  • Offers an easy transition between sitting or standing as you work - simply release the hand-brake levers on either side to position the surface higher or lower

  • Uses Constant Force technology and a counterbalancing mechanism for quick height adjustment with no cranks or motors

  • Supports a higher weight capacity with an extremely stable and solid platform

  • Ships fully assembled and sits directly on top of your desk with no special mounting or tool adjustments required for installation

  • Tested and guaranteed: Full 5-year warranty

  • Based on the lower keyboard tray, the WorkFit-TLE may not be suitable for taller users due to the keyboard tray height when standing. For taller users we recommend either our WorkFit-T or WorkFit-TL. We also recommend the Ergotron monitor riser accessory to improve the ergonomic vertical positioning between the monitor and keyboard tray

Comparison Chart for WorkFit-TLE, TL and T

Ergotron 33-397-085 WorkFit-T Sit-Stand Desktop Workstation in Black
Ergotron 33-406-085 WorkFit-TL Desktop Sit-Stand Workstation in Black
This item: Ergotron 33-444-921 WorkFit-TLE Standing Desk Converter
Weight 49 lbs (22.3 kg) 56 lbs (25.5 kg) 59 lbs (26.8 kg)
Warranty Five (5) years Five (5) years Five (5) years
Weight Capacity 10–35 lbs (4.5–15.9 kg) 10 - 40 lbs (4.5 - 18 kg) 10-40 lbs (4.5-18.1 kg)
Lift (38 cm) 15 in (38 cm) 15 in (38 cm) 15 in
Keyboard Tray Dimensions 25" x 9" (64 x 23 cm) 27.5" x 11" (69 x 28 cm) 35" x 7 3/8" - 8" (88.9 cm x 18.75 cm - 20.32 cm)
Footprint 35" x 23" (89 x 64 cm) 37.5" x 23" (95 x 59 cm) 37.4" x 35.8" (95 x 85 cm)
Suspended Keyboard No No Yes, 3.5" below desktop surface
Desktop Dimensions 35" x 23" (89 x 58 cm) 37.5" x 23" (95 x 59 cm) 37.4" x 23" (95 x 59 cm)
Price $300 - $399 $450 $400 - $499
Shipping Free Free $120
Number of Mice fitting on keyboard tray 1 1 2
Recommended for Tall Users, Smaller Worksurface Tall Users, Wide worksurface Petite, Medium Built Users
  Details Details

Frequently Asked Questions

Question: I realize there is a 15" rise when going from sit to stand, but are there basically just two positions or can I adjust anywhere within the 15" range? Answer: The Ergotron 33-444-921 (as well as the entire Workfit series) allows you to lock the position anywhere along the adjustable height range. Please note that the Ergotron Workfit-TLE is set to be discontinued in favor of the Ergotron 33-467-921 Workfit-TX which provides 20" of lift (vs 15" on the Workfit-TLE). This updated version also provides 3" of independent height adjustment of the tray in order to better position the keyboard in relation to the display.
Model 33-444-921
Manufacturer Ergotron
Part Number 33-444-921
UPC 698833064780
Color Black surface with black frame
Monitor Size Up to 30"
Weight Capacity 10-40 lbs (4.5-18.1 kg)
Lift (38 cm) 15 in
Footprint 37.4" x 35.8" (95 x 85 cm)
Weight 59 lbs (26.8 kg)
Shipping Dimensions 43" x 12" x 39" (109 x 30.5 x 99 cm)
Shipping Weight 73 lbs (33.1 kg)
Warranty Five (5) years
Price $400 - $499
Shipping $120
Suspended Keyboard Yes, 3.5" below desktop surface
Keyboard Tray Dimensions 35" x 7 3/8" - 8" (88.9 cm x 18.75 cm - 20.32 cm)
Desktop Dimensions 37.4" x 23" (95 x 59 cm)
Number of Mice fitting on keyboard tray 2
Recommended for Petite, Medium Built Users

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Ergotron 33-444-921 WorkFit-TLE Sit-Stand Desktop Workstation


All Ergotron and OmniMount durable products will remain free of defects in material and workmanship for a period of five years from the date of receipt of the product, subject to any exclusions and limitations as set forth below.


  • Ten-year warranty on all HX Products, as well as LX and MX Products purchased on or after August 1, 2014

  • Zip and YES Charging Systems: Lifetime material/workmanship; three years electrical components; one year cables (power/Ethernet)

  • Ten-year warranty on LearnFit Sit-Stand Desks

  • Three-year warranty on all Neo-Flex Ergotron Products

  • Two-year warranty on WorkFit-Z Mini

  • Elevate and accessories: Lifetime material/workmanship. Five (5) years on electrical components. Cords, cables and plugs not warranted

  • The Peanut, Zido and accessories: Lifetime material/workmanship; five (5) years for pneumatic cylinder

  • One-year warranty on electronic components. For example: Auto Lock Drawers, Auto Lock Systems, Keyboard Lights, User Interface, Coiled Cord, Battery Harness, Cables from User I/F to Power Module (excludes AA batteries)

  • Two-year warranty on Power Modules by Ergotron

  • Sealed Lead-Acid (SLA) Power Systems, SLA Batteries

  • Two-year warranty on all SLA power system components by Ergotron

  • Up to one-year capacity warranty on SLA batteries (refer to Further Exclusions and Limitations section)

  • Six-month warranty against Manufacturer’s Defects on SLA batteries, or as mandated by local law

  • Lithium Iron (LiFe) Power Systems, LiFe Batteries

  • LiFe battery capacity is warranted for two years or 1200 discharge cycles, whichever comes first (refer to Further Exclusions and Limitations section)

  • Five-year warranty against Manufacturer’s Defects on LiFe factory-installed batteries (excludes LiFe replacement batteries). Factory-installed LiFe batteries are covered at 100% for the first three years; coverage for years four and five are prorated at 1/60th per month (refer to Further Exclusions and Limitations section)

  • Service Programs - 30-day warranty

  • Refurbished StyleView Carts - one-year warranty for Mechanical Components and Power Module (excludes batteries and cosmetic defects). The appropriate battery-type warranty applies

  • Original Equipment Manufacturer (OEM) Products resold by Ergotron are warranted by the respective manufacturer

  • StyleView Electric Lift motor: Three (3) years on motor and switch

Further Exclusions and Limitations

SLA Batteries

  • In Dual SLA battery systems, replacement of both batteries must occur at the same time (in accordance with the Ergotron User Manual), or the Warranty is automatically void

  • Warranties on SLA batteries (fully-charged or fully-uncharged) left in an unused state for more than three consecutive months are automatically void

  • Factory-installed SLA batteries, and replacement SLA batteries carry a Six-month Warranty Against Manufacturer’s Defects and a 90-day Performance Warranty, or as mandated by local law

  • The 90-day Performance Warranty on factory-installed SLA batteries (excludes SLA replacement batteries) is extended to one-year provided that:
  1. StyleLink software is installed and remains continually operational to show compliance with exclusions and limitations

  2. SLA Battery is not discharged below 25% capacity more than 25 times as recorded by the StyleLink software history

  3. SLA Battery is fully recharged at least once every 36 hours as recorded by the StyleLink software history

LiFe Batteries

  • LiFe batteries that fail to deliver 70% of their rated capacity during the first 1200 discharge cycles of battery life are deemed not to have met performance standards (capacity retention)

  • The LiFe battery discharge cycle is defined as starting at the fully-charged state through the fully discharged state and back to the fully-charged state. Discharge cycle counts are calculated by the software within the battery.

These warranties do not cover product abuse, modification and failure to adhere to product instructions, improper operations and/or misuse. Ergotron is not responsible for damage arising from failure to follow instructions relating to the product’s intended use. Ergotron is not responsible for injury or loss caused by or associated with the installation and/or use of equipment in any manner other than in strict conformance with the instructions set forth in its installation manuals, supplemental assembly and installation instruction sheets, technical bulletins and/or product literature. You will provide Ergotron immediate written notice of any personal injury resulting from the use of Ergotron products.

Ergotron does not warrant damages or defects to the Ergotron product under the following conditions: an Act of God, unauthorized service or repair of the Ergotron products, damage from electrical power problems, usage of parts or components not supplied by Ergotron, failure to follow product instructions and guidelines, unauthorized changes to the Ergotron product, shipping damage (other than original shipment from Ergotron), failure to perform preventative maintenance, or damage caused by peripherals or software or from other external sources.

Exclusive Remedy

Warranty Repair: In the event that any Ergotron equipment becomes defective in material or workmanship during the warranty period, Ergotron will determine with you if the product defect is covered under warranty. Ergotron, at its sole discretion, may replace or repair the unit determined to be under warranty at a designated Ergotron location or at your location. The labor costs associated with the repair of the product may be the responsibility of Ergotron if determined to be under warranty. You must receive pre-approval by Ergotron for the labor costs prior to repair or replacement of warranty products. You must contact Ergotron to obtain a Return Material Authorization (RMA) number. An RMA number may be obtained by contacting Ergotron Customer Care online or by telephone within your specific region. Contact information is available to you on the Ergotron web site at Performance of any repair or replacement on product under warranty does not renew or extend the warranty period.

Non-Warranty Repair: You may return a product for repair that is not covered by warranty only if you have received a preapproved RMA number from Ergotron Customer Care. Labor costs and freight charges associated with non-warranty repair will be the sole responsibility of the customer, reseller or installer/integrator. A standard repair fee, specific to the product, is charged for any product that is repaired outside of the warranty period. Repairs on products out of warranty also carry a 90-day warranty, effective the day that you receive the item after repair.

For products that are not covered under warranty, Ergotron offers you the following options:
  1. You may upgrade to a newer, functionally equivalent product at a normal MSR list price

  2. Ergotron will return the product to you

  3. You can request in writing that Ergotron appropriately dispose of the product for you. A fee may apply for this service as designated by local law

Non-Defective Products: You are notified if, after examining and testing a returned product, Ergotron concludes that the product is not defective. The product is returned to you and you would be responsible for the freight charges associated with the return.

Warranty Disclaimer

Except as expressly set forth in this Limited Warranty and to the greatest extent allowed by law, Ergotron makes no other representations, warranties or conditions, express or implied, including any implied representations, warranties or conditions of merchantability, fitness for a particular purpose, non-infringement, and non-interference. Ergotron does not warrant that your use of the Ergotron product will be uninterrupted or error free. Any implied warranties that may be imposed by law are limited in duration to the Limited Warranty period, to the greatest extent allowed by law. Some states or countries do not allow a limitation on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages for consumer products. In such states or countries, some exclusions or limitations of this Limited Warranty may not apply to you. This Limited Warranty is subject to change without notification.

Ergotron devices are not intended to cure, treat, mitigate or prevent any disease.

Warranty Transferability

This Limited Warranty is available only to the original end consumer and is non-transferable. For this warranty to be valid, the Ergotron product must have been purchased directly from an authorized distributor, reseller and/or authorized representative of Ergotron.