Premier Double Z9 - Brushed ChromeThe carpet threshold Double Z9 delivers quality and style Choose from 10 finishes to complement your carpet The carpet to carpet threshold Double Z9 is an elegant and secure way to join a carpet to another carpet in a doorway. Unlike carpet door bars you can buy at the DIY shops, these are made to last, will not easily scuff or dent and will look the part for years to come. Likewise suited to joining a carpet to a hard floorcovering by removing one