Discovering the Extreme Difference. Residential, Commercial, New Construction or Renovation : We provide the highest quality of Windows and Doors for Atlantic Canada's rugged Climate and its energy-conscious consumers. Our leading edge technology produces quality assured Window and Doors, certified to be the right fit for our climate and the right fit for your home. We back these statements up with an industry leading warranty program and no exceptions! Our products are hand crafted to exceed CSA, NFRC, and Energy Star requirements to ensure your consumers expectations are exceeded! Our Eco Certified Concerto Window System tested at A3 or air tightness at -30 degrees Celsius.