Glass filter plate for eye protection in welding process is popular, but it is easily broken and heavey, to improve welder's experience, a stable and light material filter is needed. Our polycarbonate shaded filters can meet the needs. Different shades normal or gold coated. Here is a comparison in weight for the two sizes:
2"x4.25" filter glass ( 50g) and transparent glass cover (30g)
2"x4.25" polycarbonate filter(20g) and anti-spatter CR39 cover plate (10g)
4.5"x5.25" filter glass (120g) and transparent glass cover(80g)
4.5"x5.25" polycarbonate filter (55g) and anti-spatter CR39 cover plate(30g)
From the above, you can see the obviously weight difference.