Features & Benefits UL rated for use in 1, 2, or 3 hour fire-rated ceilings
Galvanized steel frame
High temperature, non-asbestos, reinforced fiber thermal fabric
212°F fusible link
Stainless steel negator-type closure spring
RD3 (22 1/4" x 18 1/4") fits Broan LoSone Select® L900, L1500 Series
- High temperature, non-asbestos, reinforced fiber thermal fabric.
- Stainless steel negator-type closure spring.
- UL rated 3-hour ceiling radiation dampers.
- For L900/1500 Series.
- Galvanized steel frame.
- 212degree F fusible link.
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