Cat 564 and 574 Forwarder WindowsAbrasion resistant polycarbonate windows the the Cat 564 Forwarder. Check your dimensions with our listed below (tallest and widest measurements). Location Dimension Rear 40" x 52" Side (Operabe) 21 1 2" x 31 1 2" Door 29" x 52 1 4" Opposite Door Right 50 3 4" x 23" If the window you are looking for says unavailable follow the instructions below: Select the window location first as the thickness options will be dependent on which window you select.