The CRL Concord Series of professional hinges is able to accommodate 3/8 to 1/2 inch (10 to 12 millimeter) tempered safety glass. A variety of four styles, including Wall Mount and Glass-to-Glass types, gives design flexibility and allows the designer/installer to create custom enclosures limited only by their imagination. These beautifully finished, solid brass forged Concord Hinges make it possible to mount 3/8 to 1/2 inch (10 to 12 millimeter) thick shower doors without surrounding frames, so the door has an almost "floating" appearance. The Concords heavy- duty stainless steel springs allow the door to swing 90 degrees inwards and outwards. A friction cam allows the door to be firmly maintained in any position, except when within 15 degrees of the closed position, where it is tapered to assist in centering the door.