glass fiber(DIA.0.5-5um),cost effective, compared with other materials, high efficiency,low resistance and longer service. ItemSizesW*H*D*(pocket quantity)RemarkF5F5 40 ≤ E < 60 595x595x600*6PAluminium frame(color:orange)595x595x300*6P595x295 x600*6P595x295 x300*6P295x595x600*3P295x595x300*3PF6F6 60 ≤ E < 80 595x595x600*6PAluminium frame(color:green)595x595x300*6P595x295 x600*6P595x295 x300* ...