... 3D theater 4.avaliable for different size 1.linear or circular polarized projecting lens, 3D filters2.for 3D movie projector3. ... .Very good quality projecting filter,avaliable for linear polarized and circular poalrized, for different size.We can make sure, you ... products.top grade glass with high transmittance and rubresistance, imported circular polarized films insidesizes available: 15 x 15cm, 20 x ...