- Author
- Underwriters Laboratories, Incorporated
- Title
- Door Closers-Holders, With or Without Integral Smoke Detectors. Standard for Safety.
- Coporate
- Underwriters Laboratories, Inc., Northbrook, IL
- Report
-
UL 228; 3rd Edition
April 29, 1993
39 p. - Keywords
- safety standards | smoke detectors | door closures