Every item made in UK, designed in UK and cast in British Foundries

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Max3 Air Brick


Max Flow Air Brick with a painted black finish.

Robust and Heavy Duty, Made by Hand with large openings to allow maximum free air flow. This is the largest free area vent with 7800mm2 in the single brick size. It is NOT suitable for fly mesh as this will reduce free area – use FLY3 instead or larger FLY6 if more free area is required combined with flymesh.

For larger orders we can supply air bricks in any RAL colour, professionally primed with 3 part epoxy + 2 part gloss or matt top coat at an additional cost – please email item number, quantity and RAL number for a proforma cost for this.

This imperial air brick can be used with duct tape to use with the metric plastic Rytons ducting for periscope and cavity wall sleeves – these are available seperately on this website.

Product specifications can be found in the table below.

 Specification PDF for Cast Iron Single Size Air Bricks ciab9x3

Specification PDF for Connecting Imperial Air Bricks with Metric Ducting 

Item Nom. Size (Inch) Size (mm) Vent Size (mm) Weight (kg) Air Flow (mm2) Plate Thickness (mm) Reverse Depth (mm)
Max 3 9 x 3 228 x 77 17 x 17 1.0 7800 8 30