Void Adaptor for Underfloor Venting Systems

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The Void Adaptor allows fixing of the air brick to a 4″ (110mm diameter) pipe.

Underfloor gas ventilation system components allow for horizontal or vertical extension to a telescopic underfloor ventilator and can be tailored to accommodate differing wall / cavity / brick courses.

Features of the System Components in this range:

  • Unrestricted air flow through the venting system.
  • Modular components can be configured for any requirement.
  • Lightweight materials, easy to handle.
  • Extremely durable and will not rot or decay over time.


The Void Adaptor is injection moulded in Polypropylene and manufactured to BS EN ISO 9001 and BS EN ISO 14001.

Available in black only.

Each component satisfies all NHBC requirements, complies with all relevant building regulations and meets all relevant British standards.

Product Specifications

Please see product image gallery for dimensions.

Product Code : BLZR41

Weight 0.1 kg

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