How do you ship seats and heads?

on those maximum dimensions for Fedex, keep in mind that they are the OUTSIDE dimensions. So if the box bulges a little in the middle, it could put you into oversize if you are not VERY careful with your measurements. Fedex and UPS both use laser scanners that measure the largest outside dimension of of the boxes. Also make sure you dont have any extra cardboard or labels or anything hanging off the box, been burned by that one before!
-Tim