Composite panels are factory-built assemblies for use in, within, or as part of the structure of buildings for commercial,
industrial, and residential use.
These factory-built panels may incorporate pre-installed materials and equipment which after installation are concealed and
which may not be accessible for inspection at the installation site.
These factory built panels are intended for installation subject to approval by the authority having jurisdiction.
These panels have been investigated in accordance with the applicable sections of one or more Model Building Code,
Plumbing Code, the National Electrical Code, a State Building Code and/or an applicable Building Code of the local
As an alternate the panels may have been investigated in accordance with only one or more specific areas of a code such as
electrical, plumbing, mechanical, structural, etc.
Structural strength requirements vary with wind and snow conditions of each locality and stability is to a large measure
dependent upon the attachment of the panels to field-erected foundations or structures. Local inspection authorities should be
consulted with respect to their requirements for the methods to be employed to attach the panels.
Prefabricated Composite Panel
Prefabricated Office Divider Panels
When the Building Code does not include specific requirements for such features as air cooling and heating systems, fuel
supply systems, chimney and venting systems, flame spread, etc. the applicable requirements of the National Fire Codes are
The flammability of building materials employed in panels is judged to be no greater than that of ordinary lumber used in
site-constructed buildings or as shown on the Classified Marking.
LOOK FOR CLASSIFICATION MARKING ON PRODUCT
The Classified Marking of Underwriters Laboratories Inc. (shown below) on the product is the only method provided by
Underwriters Laboratories Inc. to identify Composite Panels produced under its Classified and Follow-Up Service.
UNDERWRITERS LABORATORIES INC.
IN ACCORDANCE WITH
(BUILDING CODE, NATIONAL ELECTRICAL CODE, ETC.)
Joe Tedesco, NEC Consultant