The AV Stumpfl MonoClip vertical module left is a left-side frame or system component for constructing a 4:3 projection screen system. It is specified for a 691 x 523 cm system (22'8" x 17'2") and is not a standalone screen or projection surface. The component belongs to the MonoClip series and carries manufacturer article number BMV-XV691/VML. Its listed net weight is 4.0 kg; no projection area, connectors, accessories, or physical dimensions are provided.