NBS Source
I'm a manufacturer

Application

Suitable for:

  • The external walls of high-rise relevant buildings over 18 m high (11 m high in Scotland).
  • The external walls of higher-risk buildings at least 18 m high or with at least seven storeys (Building Safety Act 2022).
  • The external surfaces of residential purpose group buildings more than 11 m high.
  • The external surfaces of residential purpose group buildings 11 m high or less where an external wall is within 1 m of the relevant boundary.
  • All other residential and non-residential buildings.

Description

A1 fire-rated, non-combustible, surface mounted metal hooded cowl.


Features and benefits:

  • Made-to-measure cover for new or existing air bricks, grilles and vents.
  • Large and small sizes can be accommodated.
  • Protects external grilles and vents from excessive environmental conditions such as rain and snow.
  • Reduces air blasts through ductwork or the cavity.
  • Manufactured from A1 classified galvanized steel.
  • Supplied custom powder coated to Class A2-s1, d0. Choose from the RAL Classic colour chart in matt, semi-gloss or gloss finishes to match cladding or brickwork. Signature architectural finishes are also available.
  • Made in Britain.

General information

Color

Other

Finish

Powder-coated

Material

Carbon steel

Shape

Other

Length

Bespoke

Width

Bespoke

Height

Bespoke

Uniclass

Pr_30_59_96_93 Ventilation gratingsPrimary

CAWS

U90/310 Ventilators for heating appliances

F30/17 Ventilation ducts in external walling

F30/171 Ventilation ducts in external walling

Specification data - Ventilation gratings

Apertures

Fire-rated cowl.

Work sizes

Bepsoke.

Guidance for specification option:

Custom cowl opening width x height to cover vent/ grille plus 15 mm flange (with screw holes) top and sides. Note: Rytons recommend a cowl opening 10 mm larger than the vent/ grille for installation clearance.

Material

Galvanized carbon steel.

Colour

-

Manufacturer guidance

Supplied custom powder coated to Class A2-s1, d0. Choose from the RAL Classic colour chart in matt, semi-gloss or gloss finishes to match cladding or brickwork. Signature architectural finishes are also available. Consult manufacturer for details and insert requirements.


Reaction to fire

Class A1 fire-rated 0.9 mm galvanized steel. Class A2-s1, d0 fire-rated RAL colour powder coating.

Sustainability data

Contains Red List materials

No

Country of product manufacture

United Kingdom

Material

Carbon steel

Recyclability

Recyclable