The AV Stumpfl MonoClip middle strut is a frame or system component for MonoClip projection-screen frames with a 4:3 aspect ratio. It is specified for a frame size of 325 x 249 cm and is identified by manufacturer article number BMV-XV325/MST. The component is supplied as one piece, has a net weight of 4.6 kg, and originates from Austria. It is not a projection surface or standalone screen.