NBS Source
List your products
Description

Non-vision style air transfer grilles.

Features:

  • Can be used to provide resistance to fire and hot smoke of up to 60 minutes in fire rated doors.
  • Angled slats to ensure complete visual privacy.
  • Supplied in two halves to accommodate different thicknesses of doors.
  • Complete seal achieved in approximately five minutes when tested in accordance with BS 476: Parts 20/22.
  • Allows bi-directional air flow.
  • Easy to keep clean.
  • Contains no moving parts.
  • No site testing is necessary.
  • 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

White

Features

Can be used to provide resistance to fire and hot smoke of up to 60 minutes in fire rated doors

Angled slats to ensure complete visual privacy

Supplied in two halves to accommodate different thicknesses of doors

Complete seal achieved in approximately five minutes when tested in accordance with BS 476: Parts 20/22

Allows bi-directional air flow

Easy to keep clean

Contains no moving parts

No site testing is necessary

Holds CERTIFIRE CF564 certification

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

Lorient intumescent fire damper, non-vision style Ref: LVN20

Lorient intumescent fire damper, non-vision style Ref: LVN25

Lorient intumescent fire and smoke damper, non-vision style Ref: LVN20S

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

White

Flanges -
Type

Integral

Separate

Finish

Aluminium

PVC

Steel

Timber, ash

Timber, beech

Timber, ramin

Timber, utile

Timber, Columbian pine

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

Silver

White

Smoke control system

Not required

Talkback

Standard product features

Dimensions

  • LVN20: Two pieces, 20 mm thick.
  • LVN25: Two pieces, 25 mm thick.
  • LVN20S: Two pieces, 20 mm thick.

Free area:

  • 30% approximately.

Product Options

Sizes:

Grilles are available in a range of widths and heights from 100–600 mm in 50 mm increments. Larger sizes can be produced dependent upon application - please refer to Lorient's Technical Department.

Smoke control system:

The LVN20S 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