AXIS TX3902 Protective Film A protects your camera window, maintaining high quality even in hazardous environments such as refineries. It also protects the camera window when placed in paint booths or other environments where coatings can build up on the lens. Each film features four layers of protection. After use, simply peel off the top layer to reveal a fresh layer underneath. It is a perfect fit for AXIS XFQ1656 and AXIS XPQ1785.