Miller 271319 & 271320 Inside & Outside Cover Lens Plates 5 Packs EA For Miller Infinity Series Miller® Infinity™ Welding Helmet Inside Safety Plate 271319 Package of 5 Genuine Miller replacement inside protection plates for your Miller Infinity™ Series auto-darkening welding helmet. 4 3/4 inch X 3 1/4 inch Miller® Infinity™ Welding Helmet Outside Safety Plate 271320Replacement outside cover to protect glass lensOverall dimensions: 6 inch x 5-5/8 inchPackage includes (5) coversFor use with Miller Digital Infinity HelmetsMiller Digital Infinity clear coated outside replacement lenses. Protects the filter lens from scratches, spatter, or other damages. Easy to switch out and more commonly changed than the inside lenses.