The captain window liner is usually found attached to the sliding window mechanism found in the Airbus. For simmers, the actual metal window itself would have minimal use. The liner is made out of fiberglass and painted Airbus grey. Surprisingly the reading light remains functional after all these years. Supplied with 28 VDC, you can adjust the intensity of the light with the knob. The slider near the light bulb itself allows you to control the beam. You can direct the light by angling the reading light box.