Da-Lite Dual Masking Electrol offers versatility in aspect ratios, making it suitable for various content formats. It features letterbox masking for NTSC (1.33) and (1.85) aspect ratios, allowing you to watch classic movies in their original format. Additionally, it provides masking for HDTV (1.78) and Cinemascope (2.35) formats, ensuring a cinematic experience for modern content. With its electric operation, you can effortlessly adjust the masking to match your desired aspect ratio.