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LVH44 Intumescent Air Transfer Grille

Verified by manufacturer 2 months ago

Lorient Third party certifications:
  • Certifire Certificate

    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.

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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

Z275 galvanized steel. Metal slats with an intumescent core.

Shape

Square

Width

100 mm

125 mm

150 mm

175 mm

200 mm

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Height

100 mm

125 mm

150 mm

175 mm

200 mm

Show more

Uniclass

Pr_30_59_94_31 Fire-resisting air transfer grillesPrimary

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

Grilles 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.

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.

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).

Environmental information

Country of product manufacture

United Kingdom

Literature

Air Transfer Grille Installation Manual

Air Transfer Grille Installation Manual

Lorient Air Transfer Grille Datasheets

Lorient Air Transfer Grille Datasheets

Lorient Air Transfer Grille Product Selector

Lorient Air Transfer Grille Product Selector

Lorient Free Air Characteristics

Lorient Free Air Characteristics

Case studies

Laphroaig Distillery

Laphroaig Distillery

Edinburgh Castle

Edinburgh Castle

Royal Albert Hall

Royal Albert Hall

Ocean's Park

Ocean's Park

Third party certifications

Certifire Certificate

Certifire Certificate

Certifire CF564

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