1. Must be highly reflective to maximize image brightness:
a. Should have a wide viewing angle so the image can be seen from different angles
b. Non-glare material to reduce eyestrain and improve contrast in bright conditions
c. Smooth surface finish for improved image quality and sharpness

2. Must be able to handle 4K resolution:
a. Must support at least 3840 x 2160 pixels for true 4K resolution
b. Needs to be compatible with various video inputs, such as HDMI, DisplayPort, etc., for ultimate image quality when connected to 4K sources

3. Must be durable:
a. Projectors screens need to be resistant to bumps and scratches that may occur during installation or use
b. Fireproof or fire-resistant material is recommended due to the high heat output of some projectors

4. Must provide accurate colors:
a. Good color accuracy is necessary for viewers to get the full benefit of projector screens’ visuals
b. A wide color gamut is needed in order to achieve natural colors onscreen