Caribbean Heart Pine is a plantation-grown wood from Central America that’s nearly as hard as Oak. This vertical-grain version, exclusive to Planet Hardwood, makes a great substitute for vertical-grain Fir for the active family. It’s end-matched (!) up to 12′ long and is suitable for at-grade or above-grade installations. It can be nailed, or glued with the appropriate mastic, and can be protected with a variety of finishes.