Yanmar Excavator Windshield: SV100-2 UPPER & LOWER Replaces Yanmar Glass (Upper) #172B11-69180 & (Lower) #172B11-69360 The Upper is curved & the Lower is flat just like the original glass. Model: SV100-2 Offered in 1/4", 3/8" & 1/2" CLEAR POLYCARBONATE - SUPERCOAT™ BOTH SIDES. Lead times, install videos & more in description!