NBS Source
List your products
Description

Standard vision intumescent air transfer grille for walls, doors and rectangular or circular ventilation ducts.

  • Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls.
  • Excellent airflow characteristics which result in silent efficient operation in normal use.
  • Complete seal achieved in approximately five minutes when tested in accordance with BS 476: Parts 20/22.
  • Can be used with a cover grille for a neat finish and extra privacy.
  • Allows bi-directional air flow.
  • Simple to install.
  • No maintenance required.
  • Holds CERTIFIRE CF564 certification.

General information
Size

Not required

As drawing ___

200 x 200 mm

300 x 300 mm

400 x 400 mm

450 x 450 mm

500 x 500 mm

600 x 600 mm

Finish

Silver

Uniclass 2015 Fire-resisting air transfer grilles (Pr_30_59_94_31)
Specification data
Product Reference

Lorient intumescent fire damper, vision style Ref: LVV40

Lorient intumescent fire damper, circular, vision style Ref: LVC40

Lorient intumescent fire and smoke damper, non-vision style Ref: LVV40S

Fire resistance

30 minutes

60 minutes

Size

Not required

As drawing ___

200 x 200 mm

300 x 300 mm

400 x 400 mm

450 x 450 mm

500 x 500 mm

600 x 600 mm

Finish

Silver

Flanges -
Finish

Aluminium

PVC

Steel

Timber, ash

Timber, beech

Timber, ramin

Timber, utile

Timber, Columbian pine

Cover -
Grille

Required

Not required

CoverMaterial

Aluminium

Pressed steel

Finish

Beige

Milled

Natural satin anodized

Primed for site painting

Silver

White

Fitting: Screwed and bedded in Lorient intumescent mastic -
Mastic colour

Silver

White

Smoke control system

Not required

Talkback

Standard product features

Dimensions:

40 mm thick.

Free area:

  • LVV40: 60% approximately.
  • LVC40: 60% approximately.
  • LVV40S: 30% approximately.

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.

Smoke control system:

The LVV40S is designed to be used with the Talkback smoke control system. The Talkback system can control up to sixteen dampers/ shutters and features a status monitoring display.

Literature
Similar products from Lorient Polyproducts Ltd