Since 1996, American Windows & Siding of Connecticut has taken pride in quality workmanship. We have built our reputation one project at a time, because the care and commitment we demonstrate speaks for itself. We're proud to stand behind our work, and we're confident that each project is done well and done right. Mezzo Windows from Alside feature a thermally optimized narrowline frame and sash with a dual-pane insulated glass solution designed to meet stringent 2015 ENERGY STAR requirements. The elegant narrowline construction ensures maximum daylight visibility while advanced technological reinforcements deliver dependable strength while minimizing energy transfer.