The MK Digital Weather protective cover provides a sturdy reception and clear TV images, even in the event of rain, snow and ice. The mount is designed to protect is designed for all-purpose and suitable for use with rectangular or square LNB sleeve install with technical specifications found on the third image. Use on Zweiarmigen holder systems such as Fuba decks or Kathrein antennae, thank you. Technical Data: For rectangular LNB arm to 90 mm length: approx. 180 mm Width 250 mm Cover: Clear Plastic (perspex) assembly without tools Package includes: 1 MK Digital LNB weather protective cover 1x Installation Set