John Deere 643L / 643LII and 843L / 843LII Fellerbuncher WindowsAbrasion resistant polycarbonate windows for the John Deere L series Fellerbunchers. Check your dimensions with ours listed below (tallest and widest measurements). Location Dimensions Replaces OEM# Rear 24 1 2" x 24 1 2" T411602 Rear Sides "L or R" 42 1 4" x 17 1 2" T411603 Front 39 1 2" x 28" T411604 Front Sides "L or R" 39" x 24 1 4" T411605 Skylight 38 3 4" x 19 1 2" T344851 T401139 These are the same windows as the John Deere L series skidders;