Set of 4 genuine Navien 100mm flue wall brackets. Part number: ABMTNV600 Diameter: 100mm Type: Wall Bracket V2 Designed to support 100mm boiler flue pipe installations. Suitable for use with Navien flue systems. All items are brand new and unused, supplied in original packaging as shown in the photos. Ideal for installers, replacements, or ongoing projects. Please ensure compatibility with your system before purchase.