FibroPhenol is available in different grades with clearly defined specifications. The PHPA grade has a grammage of 170 g/m², a thickness of 0.26 mm, and a density of 0.65 g/cm³. The PHFP grade is 173 g/m², 0.29 mm, and 0.60 g/cm³. Both grades are based on cellulose and phenolic resin; PHFP is additionally equipped with flame retardant properties. These specifications are important for material selection when the design, weight, and function of the final construction need to be precisely coordinated. However, the paper’s properties can be individually customized.