Our W29B grade is light blue and available in three versions: 400 g/m² at 0.42 mm, 500 g/m² at 0.53 mm, and 600 g/m² at 0.63 mm. The density is 0.95 g/cm³ across all three variants. This range enables the selection of mask paper tailored to your application, based on desired stability, formability, and material thickness.