Patent ID: 8438804

Claim:
A wall passage opening device for an arrangement in a through-penetration of a building wall having at least one reveal comprising: an insulation element; a conduit including a first section having a first outer diameter and at least a second section, wherein the second section has an enlarged outer diameter compared to the outer diameter of the first section; a refractory layer lining the reveal of said building wall; said insulation element including an insulation shell housing at least a portion of said conduit; said insulation shell extending entirely through said through-penetration of said building wall; said insulation shell is made of mineral fibres; said insulation shell defining a cavity receiving at least a portion of both the first outer diameter section and the second outer diameter section of said conduit; said insulation shell including an insulation material region defining at least a portion of the cavity receiving at least the second outer diameter section; and said insulation material region having an interior surface substantially corresponding to an outer surface of the second outer diameter section of said conduit; wherein said inner surface of said insulation material region sealingly compresses against said outer surface of said second outer diameter section of said conduit.