Alitherm is a collection of the finest quality aluminum products, manufactured in Great Britain by Smarts Architectural Aluminum. A beautiful range of stunningly designed and exceptionally finished aluminum windows. Modernizing the design of traditional timber windows, Smarts have created a highly durable and blissfully functional solution which is perfect for the 21st Century. With unrivaled good looks, security and thermal performance, the Alitherm Window also offers the added benefits of being maintenance free and manufactured from a premium grade aluminum for long-term reliability.