LVH54 Intumescent Air Transfer Grille

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.