Rytons A1® rated range of metal grilles has expanded with the launch of three NEW A1 classified Return Grilles 175mm x 175mm with Spigots A1RD4LV (100mm Dia.), A1RD5LV (125mm Dia.) and A1RD6LV (150mm Dia.).
These square grilles join our A1 classified Round FlowRyt® Grilles with Spigots A1FRR100 (100mm Dia.), A1FRR125 (125mm Dia.) and A1FRR150 (150mm Dia.) to satisfy an increasing demand for non-combustible external grilles in residential constructions.
Are you up-to-date with current fire safety regulations? See our outline from Approved Document B around ventilation grilles and ducting or watch our free online webinar >>
‘Relevant buildings’
High-rise residential buildings over 18m high
(11m high in Scotland)
Retrofit: Residential buildings 11m high and above, undergoing unsafe cladding remediation work
Regulation: Materials forming part of an external wall or specified attachment to be of European Classification A1 or A2-s1, d0.
This can be achieved using products made of non-combustible materials within any space, forming part of the external wall.
Apply to • HVAC supply and extract ducting kits • Air bricks and grilles • Cavity weep hole ducts
Rytons has an extensive range of A1 classified products for high-rise, higher-risk and remediation projects. See our full range >> and custom design service >>
HVAC Ducting Kits
Periscope® Underfloor Vent
Round Ducting Kits
Retrofit HVAC Ducting Kits
Metal Rytweep®
Retrofit Round Ducting Kits
Residential purpose groups 1 and 2: more than 11m high
(Buildings where people sleep on the premises – residential, institutional or hospitality)
Regulation: The external surfaces of external walls should comply with European Classification A2-s1, d0 or better.
This can be achieved by using products made of non-combustible materials when fixed to, or passing through, the external surface of the external wall.
Metal louvre grilles
Metal round grilles
Metal air bricks
Apply to • Air bricks • Grilles • Cowls • Cavity weep hole ducts
Rytons has an extensive range of A1 classified products to ensure weep hole ducts and ventilation grilles conform to regulations. View our full range here >>
Residential purpose groups 1 and 2: 11m high or less (Buildings where people sleep on the premises – residential, institutional or hospitality)
Regulation: The external surfaces of external walls within 1m of the relevant boundary should comply with European Classification B-s3, d2 or better.
This can be achieved by using products made of non-combustible materials when fixed to or passing through the external surface of an external wall. Note: As plastic cannot meet the B-s3, d2 criteria, alternative metal products will be required.
Metal air bricks
Metal cavity weep
Custom cowls
Apply to • Air bricks • Grilles • Cowls • Cavity weep hole ducts
Rytons has an extensive range of A1 classified products to ensure weep hole ducts and ventilation grilles conform to regulations. View our full range here >>
What kind of projects need A1 or A2-s1, d0 classified components? Here are a few examples:
New build high-rise residential developments.
Refurbishments as part of dangerous cladding removal works.
Re-development of commercial premises into residential properties.
New build mid-rise residential developments.
House builds and low-rise builds within 1m of the relevant boundary.
For further information, or to discuss any non-combustible ventilation requirements, please do not hesitate to call our technical sales office on 01536 511874 or email admin@rytons.com.
