FERRO Klassik – warpage-resistant despite minor door thicknesses. The patented flat steel stabilizer (Patent No. 19910026), surrounding the door on all four sides, provides excellent stability of the door blade. FERRO Klassik stands for doors of highest quality with veneer strips and vertically aligned annual rings, laminated and finger-jointed casings in high-quality timber with weatherproof layers. It is a solid timber laminated core door blank with 10 years warranty against warpage.
ECO Klassik – for an easy and cost-effective construction. ECO Klassik is a perfect variant for doors of minor thickness for lower requirements, e.g. for side-entrance doors. It is a high quality solid-wood construction with a weatherproof high-quality laminated core and solid casings. On request, it is also available as an ALU type with aluminum moisture barrier. ECO Klassik goes with a 3-years warranty against warpage.