self-locking roller projection screen mounted to wall or ceiling • Large viewing angle • Suitable for all common front projection types • High-quality screen BetaLux with 1.0 gain • Light-proof rear with black coating • Black border Format: 4:3 Gain: 1.0 Viewing angle: 120° Fabric weight/m²: 300 g Fabric thickness: 0,35 mm Black borders: Yes Black rear: Yes Weight: 7 kg https://reflecta.de/de/crystalline/297-reflecta-crystalline-rollo-180x144-176x132-cm-43.html