NBS Source
List your products
LVH54 Intumescent Duct Damper
Application

Suitable for ducts.

Description

A high performance, standard vision intumescent air transfer grille for ventilation ducts. Can provide up to 240 minutes fire resistance.

Test evidence:

Fire: BS ISO 10294-5:2005.

Performance:

Can be used to provide up to 240 minutes resistance to fire.

Orientation:

Suitable for vertical applications.

Features and benefits:

  • Forms a complete seal in 2 minutes
  • Can withstand 300Pa differential across the air transfer grille
  • Low leakage rates
  • Tolerant of high humidity
  • Withstands harsh environments
  • Not prone to clogging
  • No moving parts
  • Robust construction
  • Available in a multitude of sizes
  • No maintenance
  • Use with metal cover grille (optional).

Application:

Suitable for ducts.

General information

Finish

Silver as standard

Material

Z275 galvanised steel. Metal slats with an intumescent core

Uniclass 2015

Pr_65_65_24_42 Intumescent fire and smoke dampersPrimary

CAWS

U90/440 Dampers, automatic

Specification data - Intumescent fire and smoke dampers

Product Reference

LVH54 Intumescent Air Transfer Grille

Standard product features

Thickness:

54 mm.

Free area:

70% free area (approximately).

Material:

Z275 galvanised steel. Metal slats with an intumescent core.

Finish

Silver as standard.

Fixing:

  • Each air transfer grille is manufactured 2 mm less than a nominal aperture size to provide clearance when installed in a duct or other aperture of the same nominal dimensions. e.g. a 198 x 198 mm nominal size air transfer grille will suit a 200 x 200 mm aperture.
  • Screwed and bedded in Lorient intumescent sealant.

Size (w x h):

100-600 mm (in 50 mm increments).

Literature
Similar products from Lorient Polyproducts Ltd