Powerweld hardened glass filter plate. Provides ultimate protection from ultraviolet and infrared rays during the welding process. Precision ground and edged to allow proper and safe fit. Optically correct and precisely shaded in accordance with ANSI Z87.1. 

Technical Specifications

Product #	MP4H11
Type	Passive Hardened Glass
Size	4-1/2 x 5-1/4" (114 x 113 mm)
Shade	11