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![Duct Stairs Architectural Engineering Shaft Building, PNG, 1920x1440px, Duct, Architectural Engineering, Building, Central Heating, Concrete Download Free](https://img.favpng.com/18/8/12/duct-stairs-architectural-engineering-shaft-building-png-favpng-Gxccn59DaQF7Cxg5ChTxTKdnE.jpg)
User goOd_sHit uploaded this Knocks - Duct Stairs Architectural Engineering Shaft Building PNG PNG image on September 13, 2017, 11:50 am. The resolution of this file is 1920x1440px and its file size is: 1.74 MB. This PNG image is filed under the tags: