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© 2025 IronRidge, Inc. XR Flush Mount System Certification - 1 <br />28357 Industrial Blvd. <br />Hayward, CA 94545 <br />1-800-227-9523 <br />IronRidge.com <br />Attn: Sean McDonald, CEO, IronRidge Inc. <br />Date: December 3rd, 2025 <br />Re: Report #7.22 XR10: Engineering Certification and Span Tables for the IronRidge XR10 Rail Flush Mount <br />System, for Gable and Hip roofs Rev B. <br />This letter certifies the loading criteria and design basis used for the structural analysis of the IronRidge XR System as <br />shown in Report # 7.22 XR10 " Engineering Certification and Span Tables for the IronRidge XR10 Rail Flush Mount <br />System, for Gable and Hip roofs" Rev B. All information, data, and analysis therein are based on, and comply with, the <br />following building codes and typical specifications. The Span Tables provided in the referenced report may be used when <br />all conditions of the design criteria provided therein are met. <br />Building Codes: <br />1.ASCE/SEI 7-22, Minimum Design Loads for Buildings and Other Structures, by American Society of Civil <br />Engineers <br />2.2025 California Building Code <br />3.AC428, Acceptance Criteria for Modular Framing Systems Used to Support Photovoltaic (PV) Panels, <br />November 1, 2012 by ICC-ES <br />4.Aluminum Design Manual 2020, by The Aluminum Association, Inc. <br />5.ANSI/AWC NDS-2024, National Design Specification for Wood Construction, by the American Wood <br />Council <br />Please note our evaluation only applies to IronRidge products and excludes the structural adequacy of the chosen roof <br />attachments, PV modules, or underlying roof supporting members. It shall be the responsibility of the installer or system <br />designer to verify the structural capacity and adequacy of the referenced system components with respect to the applied <br />or resultant loads of the chosen array configuration. <br />Sincerely, <br />Matthew S Kuzila, P.E. <br />12.31.2027 <br />Matthe <br />w S <br />Kuzila <br />Digitally signed <br />by Matthew S <br />Kuzila <br />Date: <br />2025.12.03 <br />14:11:47 -07'00'