RD4MFAB – Rytons Multifix® Air Brick with Flat Channel Ducting Adaptor (110mm x 54mm Range)
RD4MFAB – Rytons Multifix® Air Brick with Flat Channel Ducting Adaptor (110mm x 54mm Range)
General Details
- Full-size Multifix® Air Brick with an adaptor to connect to 110mm x 54mm rectangular ducting.
- Allows a high air flow with low pressure drop performance.
- Provides a free area of at least 90% of the free area of its associated ducting.
- Available in seven colours to maintain the external aesthetic appearance.
- Multifix® Air Brick U.V. stabilised to slow down the effects of sunlight.
- For use in areas requiring lower extraction rates such as bathrooms, kitchens and utility rooms.
- 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. Contact our technical sales office on 01536 511874 about a compliant alternative using Rytons A1 Fire-rated Bespoke Metal Service.
Size:
- 220mm L x 72mm H overall ext. with 106mm L x 51mm H overall ext. male connector.
Free Area:
- Multifix® Air Brick: 7,750mm² (77.5cm²) per unit (over 90% of the free area of its associated ducting).
Colours and Codes:
- Terracotta: RD4MFABTC.
- Buff/Sand: RD4MFABBS.
- Blue/Black: RD4MFABBB.
- Grey: RD4MFABGR.
- White: RD4MFABWH.
- Brown: RD4MFABDB.
- Black: RD4MFABBL.
- RAL colour matching available – ask about our bespoke production service.
Associated Ducting:
Composition:
- Multifix® Air Brick: U.V. stabilised polypropylene.
- Adaptor: High quality plastic.
Reference Material:
- The Building Regulations F1 2021, Installation of ventilation systems, 1.80. Each air terminal should have a free area of at least 90% of the free area of its associated duct.
- Note: This approved document takes effect on 15 June 2022 for use in England. It does not apply to work subject to a building notice, full plans application or initial notice submitted before that date, provided the work is started on site before 15 June 2023.
NBS Specification:
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