58DD - 58EAD

UL Classified For use in UL 263 wood truss floor/ceiling assemblies rated 1 hour or less.

• 1 hour wood truss CRD assembly
• Approved UL L-587 design
• Incorporates UL 555C evaluated ceiling damper
• EAD = Field installed 1.5" R-6 or 2" R-8 ductboard box
• DD = Factory installed 1.5" R-6 or 2" R-8 ductboard box
• Available in range of sizes from 4"x8" to 20"x16"