PATCHING MASS BSK-M3,5

Fire protection duct
Fire protection ducts are used to protect cables installed in the duct from external fire and the environment from internal cable fire. The fire protection duct protects cables installed in the duct from external fire for a time according to the E classification and from the heat and smoke of internal cable fire for a time according to the I classification. OBO's fire protection ducts are environmentally friendly, lightweight concrete reinforced with glass fiber, easily workable with hand tools. The visible surfaces of the duct can be finished afterwards, for example, with paint or wallpaper. This product description is an automated translation of the original Finnish description.