Our Huron Clean Room Stools from Blue Ridge Ergonomics™ are designed for applications where the concentration of air-borne particles must be kept below a desired level. Specifically, these are Class 10 (ISO 4) Clean Room Stools. They have been tested by independent laboratories to meet Fed Standard 209E and ISO 14644-1, which today is widely accepted as the industry standard for particulate requirements. Constructed of easy to clean Polyurethane which is both chemical and puncture resistant, they are available in either black or blue colors, and feature venting slots on the seat for added design and comfort. This robust seating solution was developed to withstand the toughest of environments. Users love the 360° all-around adjustment ring that can be operated from any position<br><br>Each stool features a 26" polished aluminum cast aluminum base, and a 1" thick, 13" wide seat.<br><br>Available in Desk, Medium and High Bench Heights in order to best suit the height of the work surface. We also offer with or without 18" Chrome Diameter Foot Rings for ergonomic support of the user's legs. These stools are available with either chrome-hooded rolling casters, or black glides for stationary use.<br><br>In fields such as pharmaceuticals, aerospace, semi-conductor, medical device and public health it is critical to keep particle emissions to an absolute minimum, so these chairs are a must.<br><br><b>Features:</b><br><ul style="margin-top: 0px; padding-top: 5px; padding-bottom: 5px;"><li>Seat Height Range: 19 - 27"</li><li>Seat Width: 13"</li><li>Seat Thickness: 1"</li><li>Base: 26" Polished Cast Aluminum</li><li>Weight Capacity: 300 lbs.</li><li>Made in the USA</li></ul><br><b>Available Options:</b><br><br><ul style="margin-top: 0px; padding-top: 5px; padding-bottom: 5px;"><li>Chrome 18" Diameter Foot Ring</li><li>Glides (stationary use) or Casters (rolling)</li><li>Seat Height Adjustment Ranges:<ul><li>Desk: 16-1/2 - 21-1/2"</li><li>Medium Bench: 19 - 27"</li><li>High Bench: 23 - 33-1/4"</li></ul></ul><br><br>