For the manufacture of the Frames of Wooden Windows, a Beam with a Cross Section of 68×78 MM is used. Only The Wood that Has Passed the Mandator Verification of Humidity is Allowed for Production. In Addition, All Wood Is Treated with Special Antiseptics that Protect it from Fungus, Mold, Harmful INSECTS and MOOISTURE Differences. Wood Processing Occus According to the Method of Dipping Into The Appropriate Composition.