Sodium Flare Polycarbonate Plastic Wrap Frame - 50/33-19-142mm
Model 206 Frame. Utilizes the ever-popular wrap style. Solid, sturdy, yet comfortable.
This polycarbonate is very efficient in filtering sodium flare in addition to providing good ultraviolet protection. It is very comfortable for viewing under high ambient light conditions such as when working with glowing heat sources for a duration of time. Also, although it has a relatively low luminous transmission of 38%, it is not recommended for glassworking where Infrared protection is needed. This filter is more for soft glass usage.