THis question came to mind when determining why shipping cost from all the way across the country was only $4.95, which seemed low.

I calculated this three different ways using the measurements of .1″ x 11″ X 12.75″ for the aluminum faceplate.

1) Use this online calculator http://www.onlinemetals.com/calculator.cfm result was 1.4 pounds per piece for a total of 28 pounds. Actual weight should be a little less, because of the holes in the pieces.

2) I looked up the mass of aluminum which is 2700 KG/M3. Then calculated the volume of 20 faceplates at 0.000226209 cubic meters. Multiplying the two results in 1.34 pounds per plate times 20 plates equals 27.87 pounds. Actual weight should be a little less, because of the holes in the pieces.

3) Then I realized I should have just looked it up in the tracking information. Sure enough the weight of the package is 26.1 pounds, which is about what the calculations minus the holes showed it should be.

I still don’t know exactly how the shipping was so low, but I’ll take it, knowing I have over 25 pounds of faceplates on the way.