Iogear's CL3 rated Ultra-Hi-Grade VGA Cable is a necessity for any Systems Integrator working on an educational or commercial installation. The cable is double shielded providing a minimum of 85% coverage, by Mylar aluminum foil and drain wire to provide 100% coverage. Don't be misled by cable dealers selling low cost, so-called premium cables that don't meet the minimum requirements, those cables will cost you much more in the end.