Bobcat Excavator: Windshield E Series Replaces Bobcat Glass: #7209964 or 7250149 - Upper  & #7179045 or 7250150 - Lower Includes models E25, E35, E42, E45, E50 & E55. This Excavator has two series - please provide us with glass number or serial number to confirm what you need. Offered in 1/4", 3/8" & 1/2" CLEAR POLYCARBONATE - SUPERCOAT™ BOTH SIDES. Lead time: 25-30 days - Made to order. To buy both upper and lower windows, add one window to your cart then add the second as a separate purchase. Not sure what thickness to get? Click here for info.