Thanks for bringing your question to Tundra Restaurant Supply.
This Bobrick B-7128 Trimline™ 115V Surface-Mount 18 ga Stainless Steel Hand Dryer has a dB rating/level is a 73. I can't speak to whether or not this would disturb your small office setting. As the manufacturer put it, that would depend on your tolerance to noise within the office.
Thanks again for your question.
Answered on 4/4/2013 by Andrew Call from Boulder, CO