...dedicated to the science that unites aesthetic purity, structural integrity and functionality... 715.848.8677 Photo Courtesy of City of Chicago O’Hare Airport, Chicago, Illinois Guthrie Theater, Minneapolis, Minnesota • Windload charts • Attachment spacing • Product selection • Application preference • Fabrication requirements INSTALLATION and FABRICATION MANUALS Field experience is essential in developing installation manuals. WJH&A’s design team has field installation and manufacturing fabrication experience in all the various types of fenestration products. They will provide professionally illustrated instructions through each step of the product installation and or the product fabrication requirements.