Developed to offer an exacting level of environmental design, Green Building Store has relaunched its Ecoplus range of windows and doors. The range is manufactured entirely from FSC 100% certified timber, making it the first UK manufactured range of FSC 100% windows and glazed doors, the company claims. Designed in conjunction with the Timber Research and Development Association, the Ecoplus system makes use of ultra low emissivity double or triple glazing, resulting in centre pane u-values of 1.1 or 0.5w/ m?K respectively.