Ply Gem. Online features, primarily for consumers, include a window search tool and a viewable/downloadable brochure about glass technology; all windows qualify for tax credits. A software program for dealers includes the ability to simulate or confirm performance values and options. A special kit helps pros explain the tax credit to customers and includes a leave-behind to assist homeowners with claim paperwork. Pictured: Mira Premium series. 800.999.8400.