WM9 is Grandview's large-venue fiberglass matte white fabric, engineered for seamless screens up to 400" diagonal in 16:9 with professional-grade coating.Seamless Large-Format ConstructionA 4-layer, 0.7mm fiberglass structure supports non-stretchable widths up to 5 meters, allowing seamless coverage up to 400" diagonal in 16:9 without visible joins.Consistent 1.0 Gain Across the PanelThe professionally coated matte white surface holds a 1.0 gain and 160° viewing angle with 97% color restoration for even brightness across large auditoriums and venues.Rated for Demanding EnvironmentsFire-prevention certified, Level 0 mildew proof, moisture proof, and scrubbable, with a -20°C to 60°C operating range for installs in large venues, houses of worship, and auditoriums.