ACFIRE125 – Rytons 125mm AirCore Intumescent RytBlock
- General Details
- Related Products
- Heavy-duty intumescent air transfer grille for walls, ducts and doors.
- In the event of a fire, the slats fuse together and give a complete seal in 2 minutes.
- Gives up to 3 hours resistance to fire, hot smoke and gases.
- EI rating of 2 hours when used with a cover grille.
- Tested in accordance with BS 476 Parts 20 and 22: 1987, BS EN 1634-1: 2014 and BS EN 1364-5: 2017.
- Temperature increase insulated for 22 minutes.
- Galvanised steel framework protects intumescent materials by preventing inward deformation.
- Suitable for use in high humidity.
- May be used horizontally or vertically.
- Compatible with Rytons 125mm Dia. AirCore range.
- 5,150mm² (51.5cm²) per unit.
- 118mm Dia. x 43mm D (see image gallery above).
- CAD drawing available by email.
- Bespoke sizes available using the Tailor-made by Rytons ventilation service.
- Steel grey.
- Z275 galvanised steel framework.
- Metal slats with intumescent core.
- Insert into Rytons 125mm Dia. AirCore tube and bed into position with an intumescent sealant.
- Due to the majority of house fires starting inside the home, we recommend positioning the block at the internal end of the tube.
- Alternatively/additionally, if there is an identified risk of a fire starting externally, position the intumescent block behind the external grille.
- The upper edge of the intumescent grille should be no higher than 3m from floor level.
- The lower edge of the intumescent grille should be no closer than 200mm to floor level.
- The intumescent block must be surrounded by brickwork or blockwork for it to operate successfully.
- Weight: 0.17kg.
- BS 476-20:1987 – Fire tests on building materials and structures. Method for determination of the fire resistance of elements of construction (general principles).
- BS 476-22:1987 – Fire tests on building materials and structures. Method for determination of the fire resistance of non-loadbearing elements of construction.
- BS EN 1634-1:2014 – Fire resistance and smoke control tests for door and shutter assemblies, openable windows and elements of building hardware. Fire resistance test for door and shutter assemblies and openable windows.
- BS EN 1364-5:2017 – Fire resistance tests for non-loadbearing elements. Air transfer grilles.
- European fire protection classification EI (Insulation). The ability of a specimen of a separating element to restrict the temperature rise of the unexposed face to below specified levels.
NBS Plus Specification: