LVH44 Intumescent Air Transfer Grille
Verified by manufacturer 5 months ago
Certifire Certificate
Certificate type
A high performance, standard vision intumescent air transfer grille for walls, doors, floors and ventilation ducts. The LVH44 can be assembled in multi-modules to protect large apertures.
Application
Suitable for walls, doors, floors and ventilation ducts.
Suitable for external applications.
Description
A high performance, standard vision intumescent air transfer grille for walls, doors and ventilation ducts. The LVH44 dampers can be assembled in multi-modules to protect large apertures. Can provide up to 180 minutes fire resistance.
Features and benefits:
- Exhibits excellent airflow characteristics and gives silent efficient operation with normal to high air velocities.
- Fits directly into ducts, doors or wall apertures.
- Good free area up to 65%.
- Tolerant of high humidity.
- Withstands harsh environments.
- Not prone to clogging.
- No moving parts.
- Robust construction
Positional requirements (Certifire):
- The upper edge of the grille shall be no higher than 3000 mm from floor level.
Test evidence:
- Fire: BS 476-20 and 22:1987.
- Fire: BS EN 1634-1:2014.
- Fire: BS EN 1364-5:2017.
- The lower edge of the grille shall be no closer than 200 mm to floor level.
Performance:
- Can be used to provide up to 120 minutes resistance to fire to BS 476.
- EI rating of 120 minutes when used in conjunction with a cover grille.
General information
Color | Silver |
Material | Steel Guidance for specification option: Z275 galvanized steel. Metal slats with an intumescent core. |
Shape | Square |
Width | 100 mm 125 mm 150 mm 175 mm 200 mm |
Height | 100 mm 125 mm 150 mm 175 mm 200 mm |
Uniclass | |
CAWS | L20/20 Wood flush doors L20/230 Wood flush doors L20/25 Wood panelled doors L20/250 Wood panelled doors L20/270 Wood doors L20/280 Doors L20/30 Wood doors L20/410 Wood doorsets L20/420 Wood doorsets L20/430 Wood doorsets L20/480 Doorsets L20/55 Doorsets P21/66 Door-mounted air transfer grilles P21/896 Door-mounted fire-resisting air transfer grilles P21/897 Door-mounted fire-resisting air transfer grilles with smoke shutter U90/360 Air transfer grilles U90/360 Air transfer grilles |
Specification data - Fire-resisting air transfer grilles
Standard | Fire: BS 476-20 & 22:1987; BS EN 1634-1:2014; BS EN 1364-5:2017; NEN 6069:2005+A1:2016. |
Third party certification | Certifire CF564. |
Category | Intumescent. |
Size | 100 x 100 mm.125 x 125 mm.150 x 150 mm.175 x 175 mm.200 x 200 mm.225 x 225 mm.250 x 250 mm.275 x 275 mm.300 x 300 mm.325 x 325 mm.350 x 350 mm.375 x 375 mm.400 x 400 mm.425 x 425 mm.450 x 450 mm.475 x 475 mm.500 x 500 mm.525 x 525 mm.550 x 550 mm.575 x 575 mm.600 x 600 mm.Manufacturer guidanceGrilles are available in a range of widths and heights from 100–600 mm (in 25 mm increments). Larger sizes can be produced dependent upon application - please refer to Lorient's Technical Department. Circular grilles are available in diameters up to 600 mm. |
Fire resistance (minimum) | FD30.FD60.FD120.FR120.EI90. |
Material and finish | Z275 galvanized steel with metal slats . |
Colour | Silver. |
Thickness | 44 mm. |
Free area | 65% (approximately). |
Sustainability data
Country of product manufacture | United Kingdom |
Third party certifications
Certifire Certificate
Certifire CF564
Literature
Air Transfer Grille Installation Manual
Lorient Air Transfer Grille Datasheets
Lorient Air Transfer Grille Product Selector
Lorient Free Air Characteristics
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