Mackissic 12PT side chute dimensions

[jostheim]

I bought a 12PT off marketplace and fixed it all up (new bearings, blade, hammers, etc) and have it all put back together. I am missing the side chute (or it was old enough it didn’t have one), and Mackissic wants way too much for a replacement, does anyone have the dimensions of the chute so I can fab one up?