Air velocities in the main operating area should not exceed 8.8 m/min (29 ft/min), measured at head level, and should not produce a noticeable draft. 25 11064-6, 0700
© ISO. This material is excerpted from ISO 11064-6: 2005 with permission of the American National Standards Institute (ANSI) on behalf of the International Organization for Standardization. All rights reserved.