Milwaukee 49-40-6220 7" / 9" Surface Grinding Dust ShroudOSHA Table 1 Compliant Dust Solution The Milwaukee 49 40 6220 Surface Grinding Dust Shroud provides professional contractors with a heavy duty solution for regulating respirable crystalline silica dust (29 CFR 1926. 1153) during stone and concrete work. Optimized for large angle grinders, this shroud reduces exposure to dangerous debris and particles, ensuring a safer and cleaner job site. Features Rotatable Front Door: Allows for seamless grinding