https://laserxp.com/product/protective-window-d279-t41-4kw-1064nm/
Protective Window D27.9 * T4.1 - 4kW, 1064nm - LASERXP Official Website
Dec 25, 2025 - Protective Window D27.9 * T4.1mm used in Raytools BM111 Auto Focus Laser Cutting Head and BD04K Auto Focus Tube Cutting Head.
protective window