Welding Helmet Filter And Cover Plate Lot. Included in this lot are four filter plates, a shade 9, a shade 10, a shade 11, and a shade 12. Also are two new plastic cover plates. All plates measure 2 in x 4 1/4 in. All appear new except for the shade 9 package is open, the lens looks like it's new I don't see any welding pits on it, but the package is the plastic cover plates appear new the packages are not sealed though so they may be a little Dusty. View photos of these filter plates, God bless the USA!