Unplasticized Polyvinyl Chloride Casement Windows have 90 degree opening ability, which partially centres the sash, capturing the breeze from any direction of home. These Casement Windows can be opened by use of a crank handle on the inside base of the window. These Casement Windows are designed with a side-hinged sash that opens to the exterior of home. Unplasticized Polyvinyl Chloride Casement Windows can be availed in three models like fixed windows, outward as well as inward opening windows.