Customs to pay on a skimmer?

[lastlight]

Hello,

I've nevered ordered anything as large as a skimmer before online but I'm thinking of giving it a shot. The store is in the US.

This is what it says at checkout:

Federal Express (1 x 11lbs)

Anyone have a guess what the customs would be on this?

Dimensions are as follows (not package...)

Width: 5.5 inches
Height: 22.5 inches

Thanks for any and all help!

Brett