CRL Rigid Polished Double Marine Channels are designed for use in boats and buses. These channels are available in rigid and flexible configurations. Flexible Marine Glass Run Channel Y57796 provides the flexibility needed to be used in curved openings. For best appearance, set this channel in a groove. Channels can be fit to tight radiuses by adding relief cuts at the corners. Rigid Marine Glass Run Channels with polished Stainless Steel wrap, can be sunk in a groove or surface mounted, and only used in straight edge openings. When using the double channel, use with 16M96 Edge Channel for the best weathertight results. All channels are pile and/or felt lined to protect the glass. The nylon bottom strip assures easy sliding panels, and provides a quiet and smooth operation.