Top or bottom mount. For use with 1/2" (12 mm) glass. Available in several beautiful finishes. Use monolithic tempered glass. Three-year warranty Advantages of these include the fact that they carry the majority of the weight on the bottom and have the ability to be inset from the wall, enabling clearance for towel bars and other projections. When placed vertically, either style can be used in movable transom installations. These pivot hinges are self-centering, with four springs for maximum retention strength. The SHTB12 model is adaptable to our header system.