C.R. LAURENCE UC77SB CRL Satin Brass Traditional Style Fixed Panel U-Clamp Glass Fabrication Required to Accommodate Clamps Solid Brass A Nice Option to More Traditional U-Channel, in that the Clamps Help the Appearance of an &#39;All-Glass&#39; Look For 5/16&quot; to 1/2&quot; (8 to 12 mm) Thick Glass Used to Secure Fixed Panels of Glass for Frameless Shower Enclosures