The glass manufacturer sedak has released a new quality handbook. It defines the manufacturing tolerances and is the basis for the visual assessment of sedak products. Besides the standards, regulations and data sheets mentioned in the handbook, order-specific tolerances are determined especially due to the current technical production capabilities. Designers now have a concrete guideline with technical data like dimensions, flatness, edge seal as well as visual characteristics. The handbook specifies the quality of sedak's entire product range, from basic glass to insulating glass.