File:Durasteel pressurisation duct angle iron skeleton2.jpg

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Description
English: Angle iron skeletons for fire-resistance rated ductwork before Durasteel passive fire protection boards are fastened on the outside.
Deutsch: Winkelstahlrahmen für den Bau von Luftschächten mit Brandrate bevor Durasteel Brandschutzplatten von außen befestigt werden.
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Author Achim Hering

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I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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Date/TimeThumbnailDimensionsUserComment
current14:27, 29 March 2021Thumbnail for version as of 14:27, 29 March 20212,987 × 2,694 (1.86 MB)R8cocin8 (talk | contribs)removed timestamp
23:24, 15 May 2010Thumbnail for version as of 23:24, 15 May 20102,987 × 2,694 (1.03 MB)Achim Hering (talk | contribs){{Information |Description={{en|1=Angle iron skeletons for [http://en.wikipedia.org/wiki/Fire-resistance_rating fire-resistance rated] ductwork before Durasteel passive fire protection boards are fastened on the outside.}} {{de|1=Winkelstahlrahmen für de

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