- Author
- Fleming, R. P.
- Title
- Drop-Out and Open Grid Ceilings: Concealing Sprinklers the Old-Fashioned Way.
- Journal
- NFPA Journal, Vol. 100, No. 6, 28,103, November/December 2006
- Keywords
- NFPA 13 | sprinklers | sprinkler systems | installing | ceilings
- Identifiers
- concealed sprinkler in which a cover plate hides the sprinkler assembly behind a ceiling or wall