LVV40 Intumescent Air Transfer Grille

A high performance, standard vision intumescent air transfer grille for doors, walls and ducts. To be used where air movement/ flow via fan is stopped in the event of a fire. Provides excellent airflow characteristics, which result in low sound power level and efficient operation in normal use. Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls.

Features and benefits:

• Fits directly into ducts, doors or wall apertures.
• No moving parts.
• Excellent fire integrity and insulation performance.
• EI rating in conjunction with cover grilles.
• Not prone to clogging.
• No access panels required.
• Robust construction.
• No maintenance.
• Use with metal cover grille (optional).
• Suitable for use in vertical applications.
• The upper edge of the grille shall be no higher than 3000 mm from floor level. The lower edge of the grille shall be no closer than 400 mm to floor level. Other positional requirements available, please speak to Lorient Technical Department for further information.
• 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.
• Fitting is determined by application - refer to separate fitting instructions.
• Free Area: 60% free area (approximately). Low sound power level +.