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MR50 Monovent ventilator

Glidevale MR50 Monovent provides unobtrusive ventilation to top edge abutments of lean-to-roofs. The innovative design ensures a continuous ventilation gap of 5000mm²/m.

Features & benefits

  • Provides effective resistance to driving rain and large insect ingress.
  • Unobtrusive when installed.
  • Quick and easy to install, no special tools required.
  • Guaranteed 5000mm²/m ventilation provision to comply with BS 5250 and Building Regulations.
  • Available with integral Aluflash flashing, the revolutionary lead alternative.



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Glidevale Protect is a division of Building Product Design Ltd.

Other subsidiaries include ventilation systems specialist Passivent and Kingfisher Louvres, manufacturer of aluminium louvres systems.

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