- UL Classified - For use in UL 263 wood truss floor/ceiling assemblies rated 1 hour or less.
- Incorporates UL 555C evaluated ceiling radiation damper.
- Standard 165 degree link (212 degree available)
- Factory installed 26 ga. (min) box
- Collar by others (field cut and installed)
- Available in single section sizes from 4"x8" to 14"x14" (or rectangular < 196 sq.in.)