Front and side windows for the E and G series harvesters and forwarders. Front windows are thermoformed polycarbonate with an abrasion resistant coating. These are excellent quality windows, we have sold and installed many of these and had no complaints. The side windows are flat, abrasion resistant polycarbonate. There are 2 different cab styles. It is easiest to determine your size by measuring the distance across the top of the front window. One size is roughly 44" across the top and one size is roughly 46 1/2" across the top.