Updated annually, this three-volume set includes hourly fire resistance ratings for:

• Volume 1: Includes hourly fire ratings for beams, floors, roofs, columns, walls and partitions.
• Volumes 2A and 2B: Include hourly ratings for construction joint systems, through-penetration fire stop systems, electrical circuit protective systems, and duct assemblies.
• Volume 3: Includes hourly ratings for dampers, fire doors, glazing materials, and related equipment.

Information about the form and nature of the Listing Mark or Classification Marking to be used for a specific class or category of product is given. Limitations and/or special conditions applying to the product are included.

From the Introduction
The 2008 UL Fire Resistance Design Directory contains the names of companies authorized to use the UL Mark on or in connection with products which have been evaluated by UL and found to be in compliance with UL's requirements. These companies, as well as the manufacturers and submitters of the products, have entered into an Agreement with UL to use the UL Mark only on or in connection with products manufactured in compliance with UL's requirements. It should be noted that UL certified products of different makes or model designations are not necessarily equivalent in quality or performance.

The appearance of catalog or model numbers or other specific product designations in this Directory signifies that: (1) representative samples of these products have been submitted to UL and found to comply with the applicable requirements, and that (2) the manufacturer has been authorized to use the appropriate UL Mark on production that continues to comply with UL's requirements and is subject to UL's Follow-Up Service. Since manufacturers are not obligated to apply the UL Mark on all of their production, products which do not bear the UL Mark are not required by UL to comply with UL's requirements. Accordingly, the appearance of a company's name or a specific product designation in the 2008 UL Fire Resistance Design Directory does not in itself assure that products so specified or identified are subject to UL's Follow-Up Service. The manufacturer's products are not subject to UL's Follow-Up Service unless the bear the UL Mark. Only those products bearing the appropriate UL Mark and the company's name, trade name, trademark or other authorized identification should be considered as being covered by UL's Listing or Classification and Follow-Up Service. The UL Mark provides evidence of listing or labeling which may be required by installation codes or standards.

Many of the products bearing the UL Mark incorporate components that bear the UL Recognized Component Mark. The Recognized Component Mark is applicable to components that are incomplete in construction features or limited in performance capabilities. The Recognized Component Mark does not provide evidence of listing or labeling which may be required by installation codes or standards.

The 2008 UL Fire Resistance Design Directory contains Listings and Classifications in effect as of December 15, 2007. Records of Listings and Classifications issued or withdrawn after this date will be found in UL's Listing Information database. In addition, Listings and Classifications issued after the effective date will be found in UL's Online Certifications Directory and will appear in the next annual printed Directory.

Note: At the back of this Directory is important information about UL services for manufacturers and other clients, regulatory authorities and consumers.

Use of this Directory
The 2008 UL Fire Resistance Design Directory includes the following:

• General Guide Information for each product category that includes references to the requirements used for the investigation of the products and the UL Mark to be used on the product.
• Information relating to limitations or special conditions applying to the product.
• Names of companies which are authorized to provide products bearing the UL Mark.