The floor-rising screen features a retractable flap at the bottom for added reinforcement. You can choose to use it based on your needs. The extended width is 8.5 inches, and the retracted width is 6.3 inches. Instant Theater. Zero Clutter. Maximum Impact. The NothingProjector Black Series ALR Motorized Floor Rising Screen brings professional-grade visuals to any room, with none of the hassle. Push a button, and your home cinema rises. The screen's bottom black border with a Perforated Acoustic aperture of 0.4mm for design Anti "blocking feeling”，3D stereo surround sound is realized. Motorized Floor Rising Design: This screen features a convenient floor rising mechanism, allowing easy setup and storage with just the press of a button. It is perfect for those using a home theater projector 4K or a short throw projector 4K. Ambient Light Rejection: Equipped with advanced ALR technology, it provides superior image quality by rejecting ambient light, ideal for bright environments. This makes it an excellent choice for smart home theater systems and other home theater designs. High Definition Clarity: With its Premium HBSI TPU Material surface, the screen delivers stunning 4K UHD resolution, ensuring every detail is crisp and clear. Pair it with the brightest 4K projector or a 4K laser projector for an unparalleled viewing experience. Wide Viewing Angle: Enjoy a consistent and vibrant picture from any angle in the room, thanks to the screen's 170-degree viewing angle. This feature is particularly beneficial for theater projectors and home tv projectors. Durable and Sleek: The robust construction ensures long-lasting use, while the sleek design adds a modern touch to any space. It is ideal for home projector systems and living room projectors, ensuring durability and style. Small Screen Sample Is Available If Needed Frame type NothingProjector Black Series Screen Accessories Including :Wireless RF Remote Control*1;Power Cord*1;Wireless Projector Trigger*1 Note: The plug is on the left side when facing the screen. If you need the plug on the right side, please inform customer service before placing your order. *To prevent image overflow beyond the screen area, the left and right edges of the screen fabric are slightly curved backward. This is a normal design feature and does not affect the screen’s functionality or image quality.