US Night Vision Sacrificial Window for PVS-7 / PVS-14 / 6015 NightVision Devices. These Sacrificial Windows by US Night Vision are very useful when using Optics in environments with in high winds or storm conditions. The USNV Sacrificial Window is a great way to keep your Night Vision 's optics in like-new condition. For more quality Night Vision Accessories by US Night Vision please visit our US Night Vision - Night Vision Accessories page. Specifications for US Night Vision Sacrificial Window for PVS-7 / PVS-14 / 6015 NightVision Devices: Manufacturer: US Night Vision Color: Black Width: 6 in Height: 4 in Additional Features: Fits PVS-7/PVS-14 /6015 Package Contents: US Night Vision Sacrificial Window for PVS-7 / PVS-14 / 6015 NightVision Devices 000240