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There seems to be a problem regarding the description and/or licensing of this particular file. It has been found that you've added in the image's description only a Template that's not a license and although it provides useful information about the image, it's not a valid license. Could you please resolve this problem, adding the license in the image linked above? You can edit the description page and change the text. Uploading a new version of the file does not change the description of the file. This page may give you more hints on which license to choose. Thank you.
Hi there: Nice vectorisation work! You might like this article on the topic. One ting I noticed is that you drew the sleeve on both sides of the hole. You probably thought that having it only on one side of the hole was a mistake because a sleeve goes all the way around. The reason the original drawing only has that on one side is because this is a way in firestop system drawings to indicate that the firestop will work here regardless of whether the hole was formed by a permanent steel sleeve or of the hole was formed by a knock-out plastic or sheet metal sleeves that was removed when the concrete forms were stripped. Best regards, --Achim Hering (talk) 03:05, 20 June 2011 (UTC)