Checked Baggage: How-to determine 62 linear inches ?

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Hello,

I am investigating flying with Cape Air (CO partner), and the route is SJU - STT. I was told it was a small aircraft and the checked in baggage is 62 linear inches.

How do you calculate this? We have a large roller suit case that we use to travel overseas with, but we never heard of this 62 linear inches rule.

Can some one help enlighten?

Thanks in advance.
Quote: ...never heard of this 62 linear inches rule. ...
Checked Baggage
Quote:
In general, Continental Airlines will accept up to two pieces of checked baggage with a maximum weight of 50 pounds (23 kg) per bag and a maximum outside dimension of 62 inches (157 cm) per bag in exchange for the applicable service fees. Outside dimension of a bag is equal to the width + height + depth of the bag added together.
Thanks!
Quote: Checked Baggage
Thanks WineCountry~

So, its width + height + depth of the bag added together. Now I know!