Ergotron 24-388-009 WorkFit-B, Sit-Stand Base, HD

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Product ID: 17773
  • Sit stand base only; Top not included
  • Size of the work surface compatible with this base:  41"- 72"W x 23.5"-30.5"D x 0.8"-1.75"T
  • Height adjustable platform: Lets you attach worksurface of your choice
  • 20" height adjustability:Provides sit-stand capability
  • 88 lbs weight capacity:Carries a load of up to 88 lbs (includes weight of worksurface, monitors and any other hardware being placed on the worksurface)
  • Built-in flexibility: Convert this base into a personal standing desk, a work bench or a conference table
  • Please see, if you want a base, that carries a lighter load
Recommended Accessories
List Price: $960.00
Our Price: $655.00
* applies to Contiguous United States


This WorkFit-B 24-388-009 from Ergotron is unique because it provides you the flexibility and creativity to attach your own worksurface to a height adjustable base. Add a desk surface according to the color scheme of your office walls or convert the base into a sit-stand conference table. This height adjustable platform can carry weight up to 88 lbs and provide 20" of height adjustability.

Convert your cubicle or work area into a height adjustable standing workstation. This sit-stand platform provides all the benefits of our popular WorkFit-D Desk while allowing you to attach your existing worksurface.
Features 20-inch (51 cm) vertical motion - patented CF technology allows instantaneous, tool-free, non-motorized re-positioning while you work. Integrated brake secures table in place and with just a touch releases for height adjustment.

Technical Drawing

Technical Drawing for Ergotron 24-388-009 WorkFit-B, Sit-Stand Base, HD

Technical Specifications

LCD size Capacity Lift Tilt Pan Rotation VESA
Screen Capacity Lift Tilt Pan Rotation VESA

Up to 88 lbs

39.9 kg


50.8 cm

- - - -

Product Information

Part Number 24-388-009
Description WorkFit-B, Sit-Stand Base, HD, Heavy Duty (black)
  • Height-adjustable platform

  • Hand-brake system

  • Mounting template

  • Mounting hardware

  • Four (4) glides

Weight Capacity Up to 88 lbs (39.9 kg). Listed weight capacity represents total load applied to height-adjustment platform. When calculating load, include weight of worksurface, accessory mounts for keyboard and display(s), and any computer hardware being placed on worksurface
Height Minimum height = 30.6" (78 cm); maximum height = 50.6" (129 cm). Assumes worksurface thickness of .87" (2.2 cm)
Worksurface Size Range 41"–72" (104–183 cm) W x 23.5"–30.5" (60–76 cm) D x 0.8"–1.75" (2–4.4 cm) T
CF Technology Patented Constant Force (CF) motion technology
Glides Four leveling glides establish a firm footing and adjust to install the unit on uneven floors
Keyboard Arm For proper ergonomic keyboard placement, Ergotron’s Neo-Flex Underdesk Keyboard Arm (97-582-009) is recommended
LCD ad Laptop Display Add Ergotron LCD and laptop display mounts as needed to accommodate individual workflows
Complies With all international environmental regulations related to its design, manufacture and packaging
Designed and Tested To ANSI/BIFMA X5.5-2008 standards
Shipping Dimensions 51" x 30" x 17" (129 x 75 x 43 cm)
Shipping Weight 85 lbs (39 kg); actual product weight: 63 lbs (28 kg)
Warranty Five (5) years


  • Create a stand-up computer desk, a height adjustable work bench, or a sit-stand conference table

  • Includes mounting template and required fasteners to easily adapt your own worksurface to the WorkFit desk base

  • Offers the most flexibility for customizing a sit-stand furniture solution to match your space and needs

  • Open-architecture design is scalable for future computer equipment

  • Durable, robust structure, designed to ANSI/BIFMA X5.5-2008 standards

  • Easily add accessories to your worksurface to complete your ergonomic workspace

Frequently Asked Questions

Question: I have an IKEA Galant desk top surface. Will this work as a top for this base? It is within the max top dimensions given, but I am wondering how thick the top has to be for the screws. Answer: It looks like the desk will work. For this base, the length of the top surface should be between 41"-72" and the width should be between 23.5"-30.5". The thickness should be between 0.80”-1.75.”
Question: It appears that this WorkFit-B is not motor driven. There appears to be a handbrake. Release the handbrake and it moves. Is this correct? In that case, is it counter-balanced? What happens if you have a heavy load, say 88 lbs, and you release the brake? Thud?? Do you have models like this (base only) that are motor driven? Answer: Yes, this unit is not motor-driven and it does have a handbrake. Release the brake and it can be moved up and down. The unit moves with a coiled spring technology. When you release the brake with a full load (88lbs) the unit will maintain its position and can be moved up or down using your hand with very little effort. We do have models available with built-in motors and push button control. One of them is the WorkRite Sierra HX Rectangular Height Adjustable Table, which can be purchased base only.
Model 24-388-009
Manufacturer Ergotron
Part Number 24-388-009
UPC 698833038002
Color Black
Weight Capacity Up to 88 lbs (40 kg)
Lift (51 cm) 20 in
Height Adjustment Mini height = 30.6" (78 cm), maxi height = 50.6" (129 cm). Assumes worksurface thickness of .87" (2.2 cm)
Worksurface Dimensions 41"-72" (104-183 cm) W x 23.5"-30.5" (60-76 cm) D x 0.8"-1.75" (2-4.4 cm) T
Shipping Dimensions 51" x 30" x 17" (129 x 75 x 43 cm)
Shipping Weight 85 lbs (39 kg), actual product weight: 63 lbs (28 kg)
Warranty Five (5) years
Desk Type Base Only

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Ergotron 24-388-009 WorkFit-B, Sit-Stand Base, HD


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.