Online Community of Zenith Builders and Flyers
Since this is the Open Forum and not one of the Type-Specific Forums, it would be helpful if you would mention which model of Zenith aircraft you're building.
From your dimensions I assume you are refering to the rear fusilage longerons? If so that is formed .040 and not extruded "L" angle. Dan.
Ok, sounds like the standard formed "L" angle used throughout the build 4' lengths My plans show the dimensions as 19X19 (probably changed on later plans) developed length is 36 and .025 thicknesson on my plans they are shown on 7G2 and the total build calls for a quantiy of 38. I believe the only part of the aircraft that uses any quantity of extruded angle is the forward fus and the plans call for 3/4" 6061 in .093 thickness (proprietary to Zenith .125 is the standard substitute) Dan.