MAKE A MEME View Large Image Busduct.jpg Bus duct penetration awaiting firestop Own 2006-11-10 Achim Hering Firestops Bus ducts No firestop at all - empty hole Building code violations
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Keywords: Busduct.jpg Bus duct penetration awaiting firestop Own 2006-11-10 Achim Hering Firestops Bus ducts No firestop at all - empty hole Building code violations
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