Standard 120 establishes uniform methods of laboratory testing of HVAC ducts and fittings to determine their resistance to airflow. This 2017 revision of the standard increases the length upstream of the test duct or fitting from 10 to 15 hydraulic diameters.
Product Details
- Published:
- 2017
- ANSI:
- ANSI Approved
- Number of Pages:
- 52
- Units of Measure:
- Dual
- File Size:
- 1 file , 2 MB
- Redline File Size:
- 2 files , 11 MB
- Product Code(s):
- D-86640, 86640
