Where do you find a box big enough to ship a saddle?

Home Depot has a great selection.. 

Thank you Flitastic.

I've shipped several saddles at the UPS store. They provide the box and everything. Certainly more pricy than getting your own box but it's sure convenient. 

Anyone from Canada ship a saddle to the USA? Looking for an rough cost.

My UPS store actually has a box for saddles...I just shipped one before Christmas and it was 120 and some change.

Walmart had a 24" X 18" X 18" for about $2 that might work. Pirate Ship is a good website to buy cheap shippng labels. They sell USPS and UPS labels. They sell them cheaper than USPS and UPS. 

I actually had this same problem, took my barrel saddle to UPS store it was going to cost about $130 to box and ship, it's cheaper if you get your own box, pack it and take to UPS store because then you are only paying shipping.  I found a shipping box that was large enough at U-haul so after measuring my saddle I knew what size I needed which was the Extra large box.  If you find that it's too tall I just scored the sides and bent the flaps down so that the measurments for shipping were smaller.  You are paying for the size and weight of packed box.