Unparalleled safety, without sacrificing aesthetics
Westbrook Block is a proud producer of Underwriters Laboratories® (UL®) Approved Fire-Rated CMU, both Light Weight and Normal Weight densities, in 2-, 3- and 4-hour configurations. Allowing for safe means of egress and a higher fire rating, these blocks should no longer be looked at as JUST standard grey CMU.
It is no longer necessary to sacrifice the aesthetics of the CMU for the UL® listing. Our UL® Fire-Rated CMU come in all of the amazing colors and finishes we pride ourselves on.
Because there are no apparent differences in appearance between a standard CMU and a UL® Fire-Rated CMU, Westbrook Block marks the inside core of each UL® Fire-Rated CMU with a raised “Frog.” In the event the design professional, building committee or local governing authority requires further assurance that the CMU used in fire walls are indeed Underwriters Laboratories® Fire-Rated, individual Fire-Rated CMU can be individually marked with the UL® logo. Additionally, a UL® Certificate is delivered to the job site so that the contractor can make it available to local building officials.
Westbrook Block prides itself on manufacturing UL® Fire-Rated CMU that can be integrated into the design assemblies pictured below. u901 x902 u904 u905 u906 u910 u912 u913 u914
*Underwriters Laboratories Inc. (UL) is an independent third party product safety testing and certification organization. UL has tested products for public safety for over a century. Each year more than 17 billion UL Marks are applied to products worldwide.
Westbrook Block UL License Number: R18597
UL Design Assemblies
Click on an assembly for a larger view. All assemblies are available as CAD, AI, or PDFs in our drawing detail database. Click here to access.
Sizes & Shapes
All blocks are available in Westbrook Block’s full range of colors and architectural finishes. Special shapes available on request, including bullnose, half block and more.