How big is the 300-inch projection screen?
1. When the aspect ratio is 16:9, the length of the curtain is 664.17 cm and the width is 373.62 cm;
2. When the screen ratio is 16:10, the length of the curtain is 664.17 cm and the width is 373.62 cm;
3. When the screen ratio is 4:3, the length of the curtain is 609.60 cm and the width is 457.20 cm.