The Flir Lens Cover 4115395 protects from scratches and abrasions when not in use. Built with ruggedness that will stand up to extreme conditions, there is no better lens cover for Flir H-Series thermal cameras. With Thermal imaging accessories from FLIR Systems, you can make the most of your H-Series Thermal Imager. Use the H-Series Thermal Camera Lens Cover to keep your thermal imaging optics pristine for the best performance every time you use your thermal camera.