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Max6 Air Brick


9 x 6 Max Flow Air Brick with choice of finishes, bare as standard or painted black ( £10).

The 18,000mm2 of free air flow from a 225x150mm sized air brick makes this our most efficient vent. Used in hundreds of properties, primarily to provide air for combustion with open fire places. Installed in a number of National Trust properties in England and Wales.

Although not a perfect fit, duct tape can be used to adjoin this imperial sized air brick to  a metric sized plastic cavity wall duct. This item known as a Cavity Horizontal Extension (CAVHEXT6) can be used to transfer air through the wall to an internal grille such as the Heritage 9×6 (item HER96) or Daisy Vent (DAY107).  Mesh cannot be fitted in this air brick but is more suited to be installed behind the internal grille (and it can be regularly removed for cleaning) were it serves to prevent bugs entering the rooms and reduces draughts, albeit reducing the free air by 1/3rd.

Product specifications can be found in the table below.