3-Hour Curtain Ceiling Radiation Damper
- Square or rectangular ceiling radiation curtain-type damper for horizontal mounting
- Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
- UL listed and tested in accordance with UL Standard 555C
- 3 hour fire resistance rating
- Building materials rated 3 hours or less
- CSFM California State Fire Marshal listed
- 22 gauge steel blades with insulated blanket
- Steel riveted and metal formed assembly
- Negator stainless steel closure springs mounted on spring pin brackets
- 165° replaceable fusible link
- Minimum size 4"x4"
- Maximum size 14"x14"
