Aluminium is light, firm, corrosions-constant and easy to clean. A material for a long term. Aluminium is exact forming what is very important for energy-save construction with high packing (isolation). The sound-absorbing is another positive effect of aluminium. Because of this characteristics give aluminium a very good isolation between worm and cold. With a special sound-absorbing-glass have the customer an optimal completion from both materials. Variety elements with a big choice of opening-systems. With a palette from 210 different colours (all in RAL quality).