November 17, 2023

Rytons A1SPECIAL Bespoke Plenum Manufacturing Service

Balconies, window bulkheads and other obstacles can make transitioning air bricks to HVAC supply and extract ducting challenging during the construction and refurbishment of high-rise buildings.

In these complex situations, Rytons bespoke plenum manufacturing service allows you to work with our expert design and fabrication teams to produce custom A1 classified metal adaptors, connectors and ducting kits for use in the external walls of high-rise and higher-risk buildings – both new build and during dangerous cladding remediation works.

Previous commissions have included unique non-combustible metal window plenums, balcony ducting, duct adaptors, ducting connectors, plenum adaptors to z-shape ducting, meshed plenum boxes to spiral ducting, off-set connectors and angled transition pieces.  See examples in our A1SPECIAL image gallery.

Rytons bespoke plenums and ducting kits are classified A1 non-combustible and meet fire-safety regulations.  Custom air bricks can be fabricated to suit any plenum adaptors and are supplied powder-coated in the RAL Classic colour of your choice to class A2-s1, d0.

For further information, or to discuss any bespoke plenum requirements, please do not hesitate to call our technical sales office on 01536 511874 or email

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