The internal lining is designed to ensure proper finish around the window from the inside of the room. It improves thermal insulation around windows without restricting light. Specially profiled slats are used to fix the lining to the wall and guarantee a neat finish. The XLW lining is made of white waterproof laminated sheets, which make it durable and easy to keep clean. The white surface reflects light efficiently, improving the overall light in the room. All linings are available in two widths: 30cm and 40cm. These dimensions are
for the vertical side elements of the lining. Actual sizes of particular linings will depend on the angle of the roof and its thickness. The XLW-F is designed to be installed solely with wooden windows, whereas XLW-P with aluminium clad plastic windows There are available XLW-FD internal linings for FYP-Y proSky and FDY-V Duet proSky windows - to individual order.