Rosboro X-Rim FRT is the  only UL Classified and factory-warrantied fire retardant treated glulam rim.

X-Rim FRT is your solution for Type III construction specifications that require fire retardant treated wall framing. Specify and build with confidence knowing you have a UL Classified solution that’s fully backed by the manufacturer. Accept no substitutes!


  • The only UL Classified fire retardant treated glulam in the market
  • Readily available from reputable EWP distributors
  • Meets all requirements of IBC section 2303.2 for Type III construction
  • APA certified structural design values for rim applications
  • Factory warrantied for structural integrity and treatment efficacy
  • Configured for easy identification by inspectors in the field
  • Certified by Underwriters Laboratory UL ER700201 and L.A. City LARR25150


  • Widths: 3½” & 5½”
  • Depths: 9½”, 11⅞”, 14”, 16” & 18”

Look for the "UL Classified" Stamp

If you’re using an FRT product without the UL Classified stamp, it is not code compliant. Don’t take the risk accept no substitutes.

Considering custom glulam? Contact us now to speak to an expert.