OBO presents the flush-mounted and cavity wall boxes: During the development of the portfolio, great attention was placed on simple, rapid and flawless work. The result is a wide range of clever product details – some patented – which redefine quality and speed. All the flush-mounted and cavity wall boxes of the portfolio are 100% halogen-free. If there is a fire, they provide additional safety: Halogen-free materials reduce the amount of toxic smoke gases and do not develop any corrosive substances.