Rytons A1® Fire-rated Ducting Kit 125mm Dia. with Return Grille Double Air Brick Return Grille Double Air Brick: 18,720mm² free area (over 90% of the duct). Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0. Custom connector for 204mm x 60mm or 125mm dia. ducting. 204mm x 60mm - custom overall length (including plastic duct connector RD5FR+RD5CONN - refer to drawing). Note: Rytons recommend adding 250mm to the external wall measurement to ensure the duct and connector finish within the inner leaf. 125mm dia. - custom overall length (including plastic duct connector RD5CONN - refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf. Properties: Class A1 fire-rated 0.9mm/0.5mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps. Registered Design 6109952/6109953. Patent Approved. Product Code: A1DK125RGD. Download Drawing.
Quantity required per RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0:
Connector required (204mm x 60mm or 125mm dia.):
Overall length required (including plastic duct connector - refer to drawing). Note: Rytons recommend additional length to the external wall measurement to ensure the duct and connector finish within the inner leaf, see above for details:
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