LVH44 Intumescent Air Transfer Grille

Application

  • Suitable for doors, walls and 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.

Test evidence:

  • Fire: BS 476-20 and 22:1987.
  • Fire: BS EN 1634-1:2014.
  • Fire: BS EN 1364-5:2017.

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.

Orientation:

LVH44 dampers can be installed in any orientation.

Positional requirements (Certifire):

  • The upper edge of the grille shall be no higher than 3000 mm from floor level.
  • The lower edge of the grille shall be no closer than 200 mm to floor level.

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

Application:

  • Suitable for doors, walls and ducts.
  • Suitable for external applications.

General information

Size

See 'Options' below and insert requirements.

Finish

Silver as standard

Material

Z275 galvanized steel. Metal slats with an intumescent core

Uniclass 2015

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

Product Reference

LVH44 Intumescent Air Transfer Grille

Size

See 'Options' below and insert requirements.

Standard product features

Material:

Z275 galvanized steel. Metal slats with an intumescent core.

Thickness

LVH44 44 mm thick.

Free area

LVH44: 65% approximately.

Finish

Silver as standard.

Product Options

Sizes:

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.

Literature

Specialised Fire Resistant Door Hardware

Specialised Fire Resistant Door Hardware

Third party certifications

  • CF564

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