TAL9HMCWL – Rytons 9×9 Cowled Acoustic AirLiner® Set with Hit & Miss Ventilator

40 dB open / 41 dB closed (Dn,e,w)
12,700mm² (127cm²) Equivalent Area

Categories: Acoustic AirCore and AirLiner Sets, Background Ventilators

General Details

TAL9HMCWL – Rytons 9×9 Cowled Acoustic AirLiner^® Set with Hit & Miss Ventilator

Telescopic cavity liner set with external cowl for background room ventilation.
Allows the introduction of fresh outside air into the room to disperse moisture, odours and other airborne pollutants.
Use in noisy areas to reduce the amount of noise entering the building for a more peaceful environment.
External cowl protects against excessive weather conditions and alleviates air blasts through the cavity.
Telescopic cavity liner contains a system of internal baffles to reduce light and draughts.
Internal hit & miss grille manually adjusted with a sliding action allowing ventilation to be controlled as required.
Cowl, air brick and hit & miss grille U.V. stabilised to slow down the effects of sunlight.
External water baffles prevent the transfer of water across the cavity.
Position at a high level (typically 1.7m above floor level) for all dwelling types and storey heights.

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.

Sound Reduction & Equivalent Area:

Sound reduced by 40 dB with internal grille fully open and 41 dB when closed (Dn,e,w) (tested by BRE Acoustics).
12,700mm² (127cm²) equivalent area (tested to BS EN 13141-1:2004 and independently verified by the BRE).

Size:

Cowl: 274mm L x 235mm H x 103mm D.
Acoustic AirLiner^® sleeve: 220mm W x 207mm H, extends from 250mm to 404mm L (including air brick) (see image gallery).
Hit & Miss grille: 271mm L x 247mm H.

Colours:

Bespoke colour matching service available. Call our sales office on 01536 511874 or email admin@rytons.com for details and pricing.

Composition:

Acoustic AirLiner^®: Polypropylene containing sound absorbent foam panels.
Acoustic AirLiner^® contains recycled plastic.
Foam fire performance: DIN 4102 B1; UL94 94 V-0 & 94 HF-1; NFP 92-501 M1; FAR 25.853 (a) Pass; ASTM E 662-83 Pass; ATS 1000.001 Pass; Building Regulations Class ‘0’.

Installation:

No special fixing is required. Build in the cavity liner with fitted air brick as work proceeds. Extend the telescopic sleeve as necessary. Fasten the cowl to the brickwork. Fasten the hit & miss ventilator internally. To comply with Building Regulations Part F the ventilator should be sited not less than 1.7m above floor level.

Reference Material:

England: view extracts>>
Approved Document F: Means of Ventilation in Dwellings (2010 edition incorporating 2013 amendments).
Approved Document F: Means of Ventilation in Dwellings (2021 edition). Note: The 2021 update takes effect on 15 June 2022. It does not apply to work subject to a building notice, full plans application or initial notice submitted before that date, provided the work for each building is started before 15 June 2023.

Wales: view extracts>>
Approved Document F: Means of Ventilation in Dwellings (2010 edition incorporating 2013 amendments).
Approved Document F: Means of Ventilation in Dwellings (2022 edition). Note: The 2022 update takes effect on 23 November 2022. It does not apply to work subject to a building notice, full plans application or initial notice submitted before that date, provided the work for each building is started before 23 November 2023.

Scotland: view extracts>>
Building Standards Scotland Technical Handbook – Domestic: Mandatory Standard 3.14 Ventilation.

Measurement of airborne sound insulation was made in accordance with BS EN 20140-10: 1992.
Single number quantities were calculated in accordance with BS EN ISO 717-1:1997.
Equivalent area tested to BS EN 13141-1:2004 and independently verified by the BRE.

Handling Information:

Questions & Answers:

Will the vent reduce sound from inside to outside as well as from outside to inside? The BRE has advised us that it’s reasonable to assume that ‘reciprocity’ applies to the vents. That is, the third octave values for sound reduction index are the same in both directions (out to in and in to out).

NBS Specification

BRE Test Report

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