Sightline Introduces Breakthrough in Bi-Folding Door Technology

Bedfordshire, England -- (ReleaseWire) -- 03/26/2015 -- Sightline Doors, a manufacturer and supplier of quality architectural and patio door systems, has revealed a breakthrough design in retractable bi-folding doors. The "UltraSlim" fully retractable doors feature aluminium side frames that are just 19 mm wide, about 70% narrower than comparable double-glazed door frames.