L-21 Windows Kit

L-21 Windows replace the "D" window in a standard PA-18 fuselage with a greenhouse. This modification originally appeared in the military version of the PA-18. It allows for the passenger to see significantly more from the second seat. Customers also commonly pick this mod for added light in the cockpit and for looks. We've found that planes with this modification function best (or at least pilots and passengers stay more comfortable) in cooler temps. L21 Window Kit includes all metal elements and parts required to self-install onto a PA-18 fuselage.