K-LINE: French manufacturer of aluminum windows, patio doors, sliding windows and entrance doors. Cookies ensure the proper operation of our services. By continuing to browse this site, you accept its use . PROS AREAPRESCRIBERS SPACEPRESS AREARECRUITMENT DISCOVER K • LINETHE + K • LINEOUR PRODUCTSCHOICE GUIDESERVICESFAQGALLERY DISCOVER OUR PRODUCTS! 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 K • LINE Smart Home K • LINE AND YOU ... WHERE TO FIND A PRO? Find an installer near you. TO BE REPAIRED? Make a breakdown request. WHERE TO SEE OUR JOINERY? Visit a showroom with K • LINE joinery. DISCOVER OUR CATALOGS Consult our brochures. Collect them from a pro. Entrance door configurator Personalize your front door (models, colors, decorations, accessories) and test it on your home. NEWS CONNECTIONS SITEMAP TERMS OF SERVICE LEGAL INFO CONTACT US Follow us : Aluminum windows K • Line, the leading manufacturer of aluminum joinery, has developed a new generation of bespoke aluminum windows that are innovative, highly insulating and certified, for renovation as well as new. 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 windows with hidden opening, aluminum sliding, brick partition, large bay window, door aluminum entry ...