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Crown Doors, LLC (Crown) is the exclusive manufacturer of the patented SST-II Hydraulic Bi-Folding Door and Window System (Patent No. 8,714,229), as well as the Hydraulic 50/50 (Patent No. 9,567,789) and Single-Swing door/window systems. Through creative design and engineering excellence, we produce innovative architectural hydraulic doors and windows. With an emphasis on ease of installation and simplicity of use, Crown redefines the way in which you interact with the spaces around you. 

Crown has always placed focus on ease of installation. Door and window systems which utilize separately-mounted mechanical lifting systems can be time consuming and difficult to install, often resulting in poor operation and frequent maintenance requirements. Crown's standard products are supplied with their own pre-hung frame which is easily positioned in the rough opening and mechanically fastened or welded in place.

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