Image: Nelson plw
Nelson_plw.jpg (484 × 379 pixels, file size: 109 KB, MIME type: image/jpeg)
Description: Firestop pillows consisting of 3lbs/ft³ rockwool layers, intumescent resin sprayed in between, inside a 4 mil plastic bag.
Title: Nelson plw
Credit: Own work
Author: Achim Hering
Usage Terms: Creative Commons Attribution 3.0
License: CC BY 3.0
License Link: http://creativecommons.org/licenses/by/3.0
Attribution Required?: Yes
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