Quick overview from the supplier:
Manual 300x233cm Reflecta Crystal-Line Rollo (292x219) 4:3 black rear/black border, 87684
https://reflecta.de/en/crystalline/301-reflecta-crystalline-rollo-300x233-292x219-cm-43.html
Aspect imagine: 4:3
Instalarea: Perete, Tavan
Unghi de vizualizare : 120 °
Factor amplificare luminii: 1.0
High-quality screen BetaLux with 1.0 gain
Light-proof rear with black coating
Black border