4" wide is the max on small Gildans. If possible, I would recommend upgrading to the double sleeve pallets - you can print 2 sleeves at once (different designs on each sleeve if necessary). You can't print both sleeves of the same shirt at once, so you have to load 2 different shirts, then stack and print the alternate sleeve, however it does speed things up 2x at least as opposed to printing on a single sleeve pallet