NBS Source
I'm a manufacturer

LVH54 Intumescent Air Transfer Grille

Verified by manufacturer 7 days ago

Lorient

Vision-style intumescent air transfer grille for ducts.

Jump to:
+44 (0)1626 834252 Website

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.


Features and benefits:

  • 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.
  • Forms a complete seal in 2 minutes
  • Can withstand 300 Pa 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).
  • Free area: 70% free area (approximately).
  • 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.

General information

Color

Silver

Finish

Galvanized

Material

Steel

Intumescent

Shape

Square

Length

-

Manufacturer guidance

Thickness: 54mm.

Width

100 mm

150 mm

200 mm

250 mm

300 mm

Show more

Height

100 mm

150 mm

200 mm

250 mm

300 mm

Show more

Uniclass

Pr_65_65_24_42 Intumescent fire and smoke dampersPrimary

CAWS

U90/440 Dampers, automatic

Specification data - Intumescent fire and smoke dampers

Standard

To BS ISO 10294-5.

Thickness

54 mm.

Fire performance

240 minutes.

Material Finish

Z275 galvanised steel. Metal slats with an intumescent core.

Sustainability data

Country of product manufacture

United Kingdom

Literature

Air Transfer Grille Installation Manual

Air Transfer Grille Installation Manual

Fire and Smoke Resistant Dampers / Air Transfer Grilles

Fire and Smoke Resistant Dampers / Air Transfer Grilles