GenFast™ WH Seam Plates are specifically designed for use with GenFast™ #15 WH Fasteners to secure GenFlex TPO membranes to a variety of approved substrates, including 22-gauge steel, wood, and structural concrete decks. These durable plates provide consistent load distribution and strong membrane attachment, helping ensure long-term system performance. For proper use and installation requirements, refer to current GenFlex Specifications and Details.