PASSIVE FIRE PROTECTION
Firestop Penetration Seals
Semi rigid ventilation ducts are particularly susceptible to fire
attack and require a firestop that exhibits exceptionally quick
reaction to seal the duct before fire can pass through.
The Vent Duct OverSleeve is fire tested to EN 1366-3 in plasterboard partition walls and provides up to EI120 minutes fire resistance. The testing was carried out with Uncapped/Uncapped pipe end configuration as required for ventilated systems.