Correct?

10 = height

16 = width (depth)

24 = length

I assume that is correct and only ask because seat guru has:
Maximum Dimensions of Carry-on Luggage: 10in x 16in x 24in (length x width x height)

I may be taking a small (24 pound) microwave with me, I guess I could trust the baggage handlers not to destroy it if I check it in