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Rytons A1® Fire-rated 125 mm Dia. Ducting Kits with Double Air Bricks
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Rytons A1® Fire-rated 125 mm Dia. Ducting Kits with Double Air Bricks

Rytons A1DK125RGD: Return Grille Air Brick

Rytons Building Products Ltd Variant:

Class A1 fire-rated, non-combustible, metal 125 mm dia. ducting kits for high-rise buildings over 18 m (11 m in Scotland) and cladding remediation projects.

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+44 (0)1536 511874 www.vents.co.uk

Application

Suitable for use in high-rise buildings and those 11 m and above undergoing unsafe cladding remediation work.

Description

A range of tailor-made Class A1 fire-rated 100 mm dia. ducting kits. Choice of rectangular or round connector to suit HVAC supply and extract ducting 204 x 60 mm/125 mm dia.


Features and benefits:

  • Compliant with regulations for the requirement of non-combustible ducting in the external walls of high-rise buildings and those 11 m and above undergoing unsafe cladding remediation work.
  • Three air brick styles. All air bricks offer low resistance and high airflows of over 90% of the free area of the duct. For cladding, flanged options cover cut edges and maintain the aesthetic appearance.
  • Custom powder coated air brick. Choose from the RAL Classic colour chart in matt, semi-gloss or gloss finish achieving Class A2-s1, d0. RAL Design and signature architectural coatings are also available.
  • Made to custom length and includes a plastic duct connector. Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
  • Supplied ready to install with no on-site assembly required.
  • Custom design option available.

General information

Finish

Matt

Custom powder coated air brick from the RAL Classic colour chart (achieving Class A2-s1, d0). RAL Design and signature architectural coatings also available.

Gloss

Custom powder coated air brick from the RAL Classic colour chart (achieving Class A2-s1, d0). RAL Design and signature architectural coatings also available.

Semi-gloss

Material

Steel

Galvanized steel.

Shape

Circle

Compatible with rectangular HVAC and extract ducting 125 mm Dia. / 204 x 60 mm.

Size

Diameter.

Length

Bespoke

Metal duct fitted with a plastic duct connector. Rytons recommend adding 100-250mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.

Width

125 mm

Diameter.

Height

125 mm

Diameter.

Uniclass

Pr_30_59_94_31 Fire-resisting air transfer grillesPrimary

CAWS

U90/360 Air transfer grilles

U90/360 Air transfer grilles

Specification data - Fire-resisting air transfer grilles Enhanced data

Standard

Class 1 without testing.

Third party certification

Building Regulations Approved Document B.

Regulation 7(2) and Building Regulations Approved Document B. - Suitable for use in high-rise buildings with a storey 18 m or more above ground (England) or 11 m in Scotland (Technical Handbook 2019: Domestic and Non-domestic 2.7).

Size

125 mm Dia.

Length specified by the customer.


  1. With connector for 204mm x 60mm ducting. Custom overall length (including fitted RD5FR+RD5CONN plastic Flat Channel Horizontal Adaptor 200mm D). Note: Rytons recommend 250mm in addition to the measurement from the outer leaf to the inner leaf.
  2. With connector for 125mm dia. ducting. Custom overall length (including fitted RD5CONN plastic Pipe Connector 62mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.

Fire resistance (minimum)

Class A1.

Fire classification of construction products and building elements : Class A1.

Material not compromised at a temperature of 800°C as required by the Building Regulations Approved Document B for ductwork spanning the cavity.

To European Commission paper 96/603/EC referred to in BS EN 13501-1:2018.

Material and finish

Galvanized steel.

0.9 mm.

Colour

Choice of fire-rated RAL colour powder coatings to maintain the external appearance, in order to achieve A2-s1, d0. Spot-welded. Ever build intumescent fire protection and acoustic sealant used on all gaps, consult manufacturer.

NominalSize

Custom sizing and bespoke design service available. Products are handmade and have a tolerance of +/- 5%, consult manufacturer.

Free area

17,280 mm².

Integral accessories

15 mm flange and corner screw holes.

To all flanged air brick products.

Surface finish

Powder-coated, matt.

To achieve A2-s1, d0.

Powder-coated, semi-gloss.

To achieve A2-s1, d0.

Powder-coated, gloss.

To achieve A2-s1, d0.

Environmental information

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recyclability

Recyclable

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