HM85F – Rytons 9×6 Hit & Miss Ventilator

General Details

HM85F – Rytons 9×6 Hit & Miss Ventilator

  • Plastic hit & miss grille with integral flyscreen.
  • Manually adjusted for controllable ventilation.
  • Flush face, slim design and concealed fixings give a neat unobtrusive appearance.
  • Integral flyscreen helps prevent the ingress of insects and spiders as well as reducing light and draughts.
  • Compatible with Rytons 9×6 AirLiner® cavity liners.
  • U.V. stabilised to slow down the effects of sunlight.
  • Note: Hit & Miss Ventilators must not be used to supply combustion and cooling air to boilers, stoves and fires.

Free Area:

  • 8,600mm² (86cm²) per unit.


  • 271mm L x 171mm H (see image gallery above).
  • CAD drawing available by email.


  • White: HM85F (bagged HM85FBG).
  • Bespoke colour matching service available.  Call our sales office on 01536 511874 or email for details and pricing.


  • U.V. stabilised high impact polystyrene.


  • Detach the flyscreen from the front cover.
  • Fasten the flyscreen over the opening.
  • Align the front cover with the flyscreen and ‘snap’ into position.

Handling Information:

  • Box quantity: 25 number.
  • Box size: 28cm W x 18cm H x 19cm D.
  • Box weight: 2.4kg.

Reference Material:

  • The Building Regulations 2000, Approved Document F.
  • The Building (Scotland) Regulations, Mandatory Standard 3.14.
  • The Building Regulations (Northern Ireland) 2000, Technical Booklet K.
  • British Standard BS 5250.

NBS Specification:


Rytons is proud to be a family run business and British manufacturer since 1972

Quote Request


Please note: As a manufacturer, we deal exclusively with trade professionals and are unable to take price enquiries from members of the public.
We aim to respond to quote requests within the next working day.
In case of query please call 01536 511874, thank you.

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