PROFESSIONAL AREA PRESCRIBERS AREA PRESS AREA DISCOVER K • LINE THE + K • LINE OUR PRODUCTS MY PROJECT SERVICES DISCOVER OUR PRODUCTS! Striking windows and patio doors K • LINE AIR Sliding bay 2 rails 3-rail sliding bay Exterior wall Specials and composite sets Entrance doors Roller shutters and sun protection WHICH WINDOW FOR MY PROJECT? To know everything about your joinery. WHERE TO FIND A PRO? An installer near you. INTERACTIVE CATALOGS Consult our brochures. K • LINE NEWS Discover the new K • LINE aluminum window! Entrance door configurator Personalize your front door (models, colors, decorations, accessories) and test it on your home. CONTACTS NEWS CONNECTIONS SITEMAP LEGAL INFO © K • LINE Aluminum window K • Line, the leading manufacturer of aluminum joinery, has developed a new generation of bespoke aluminum window that is both innovative, highly insulating and certified, for both renovation and new windows. French leader in industrial aluminum windows and aluminum joinery, K • Line offers a complete range of aluminum windows and patio doors suitable for all architectures: aluminum window with hidden opening, aluminum sliding, brick partition, large bay window, door aluminum entry ...