Sliding sleeve for fire protection duct FWK 30/FWK 3E I90/E30 50x60mm galvanized. System accessories for fire-resistant cable routing duct FWK30 for wall and ceiling mounting - I90 according to DIN4102-11 to protect the escape and rescue route and FWK3E for wall and ceiling mounting - E30 according to DIN4102-12 to maintain functionality.
