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Unirac, Inc. • www.unirac.com <br />1411 Broadway Blvd. NE • Albuquerque, NM • 87102-1545 • Ph: (505) 242-6411 • Fax: (505) 242-6412 <br />April 17, 2018 <br />Re: Unirac Tile Hook Product Compatibility <br />To Whom It May Concern: <br />Unirac has assessed the compatibility of several Unirac mounting systems (previously Solarhooks mounting systems) <br />with commercially available solar racking systems. The purpose of this report is to evaluate the physical fit of the <br />connection between each racking system and the Unirac mounting products. <br />SAMPLE DESCRIPTION <br />Sample hardware of three systems was delivered to a 3rd party laboratory on April 27, 2017. Three racking systems, <br />one manufactured by SnapNrack, one by IronRidge Inc, and one by Mounting Systems Inc were supplied along with <br />three Unirac mounting systems, part #004CT5S, #004CT1S, and #004051D (previously Solarhooks part #KS-RH-CT5, <br />#KS-RH-CT1, and #CMP-KT). Part#004AT1S is included thru similarity of mounting interface as well. The fit of Unirac’s <br />Solarmount racking system and Quickmount QRail system (added thru similarity to Mounting Systems racking) was <br />also evaluated by Unirac outside of the lab evaluations and is included in the results of this letter. Appendix A includes <br />a specification sheet for each Unirac tile hook system. <br />COMPATIBILITY PROCEDURE <br />The three Unirac mounting systems products were assembled with each racking system using each racking system’s <br />corresponding hardware. For example, the SnapNrack racking system was supplied with SnapNrack bolts and <br />hardware; the connection of the SnapNRack racking system to the Unirac mounting system via the SnapNrack bolts <br />and hardware was assessed. The same procedure was followed for the other systems. Each connection between the <br />various racking systems and Unirac mounting systems was evaluated for fit and any limitations were noted. Appendix B <br />includes photos of the racking systems assembled to the Unirac mounting systems. <br />COMPATIBILITY RESULTS: <br />Compatibility between the racking systems and Unirac mounting systems was evaluated for physical connection and <br />fit. Unirac, SnapNrack, Iron Ridge, Mounting Systems and Quickmount QRail are all compatible with the evaluated <br />Unirac mounting systems, as shown in Table 1, without limitation. <br />This letter does not quantify the mechanical properties of the various racking systems or associated strength capacities <br />of those systems. Engineering requirements set by building codes, engineering standards and local jurisdictions take <br />precedence. <br />Sincerely, <br />Ernest Gallegos <br />Director of Products <br />Unirac, Inc. <br />Ernest.gallegos@unirac.com <br />1338 N Custer St <br />05/01/23