MFAB – Rytons Multifix® Air Brick

General Details

Features and Benefits:

  • Robust interlocking air brick.
  • Grille design allows a high air flow with low pressure drop performance.
  • One size can form a unit 9×6, 9×9 etc.
  • Textured finish maintains aesthetic appearance.
  • Use with Rytons Periscope® Underfloor Ventilator PUFV and AirLiner® cavity liners 9×3, 9×6 and 9×9.
  • U.V. stabilised to slow down the effects of sunlight.
  • Please note: This item is a plastic component and therefore is not suitable for use within a) the external walls of buildings more than 11m high where people sleep on the premises (residential, institutional or hospitality) or b) external wall surfaces within 1m of the boundary if the building is 11m high or less, in England. For a compliant alternative see Rytons A1® Fire-rated Metal Single Air Bricks part of Rytons A1® Fire-rated Range.


  • 215mm L x 66mm H x 58mm D (see image gallery above).
  • CAD drawing available by email.

Free Area:

  • 7,750mm² (77.5cm²) per unit.


  • Terracotta: MFABTC.
  • Buff/Sand: MFABBS.
  • Blue/Black: MFABBB.
  • Grey: MFABGR.
  • White: MFABWH.
  • Brown: MFABDB.
  • Black: MFABBL.
  • Bespoke colour matching service available.  Call our sales office on 01536 511874 or email for details and pricing.


  • U.V. stabilised polypropylene.


  • No special fixing required.  Installation is fast and easy with Rytons Multifix® Air Brick replacing a standard brick.  Place at high and low levels.  Vertically stagger above and below horizontal fire stops.

Handling Information:

  • Box quantity: 20 number.
  • Box size: 35cm W x 26cm H x 23cm D.
  • Box weight: 2kg.

Reference Material:

  • British Standard BS 493 recommends that for a louvre design air brick the size and shape of the apertures shall be such that a steel ball of 9.5mm nominal diameter shall not pass through.

NBS Specification:


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

Pressure Loss Data

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.

Product required (product name and code):

Quantity required (box quantities may apply):

Colour required (RAL colour matching is available on some lines subject to an additional charge):

Notes or Additional Information:

Contact Name:

Company Name:

Email Address:

Contact Number (in case of query):