The Da-Lite 33420 Model B Manual Projection Screen is a high-quality matte white screen measuring 72 x 72 inches. This manual screen from Da-Lite is designed for use in offices and business settings for presentations and projector displays. The brand's reputation for excellence in projection screens, along with the sleek design and reliable operation of this specific model, make it a popular choice among professionals seeking a reliable and effective solution for their projective display needs.