Can this board be cut to different sizes?

Yes it can be cut with a higher number blade number of teeth that is. But Lowe's does not cut them anymore you have to cut them yourself at home

Yes, preferably with a saw blade with more teeth. Another trick to prevent splitting/chippi ng is to maskkng/painters tape over the board where the cut will be, mark the tape and cut.

I have had others of the same type cut to different sizes. Lowe's will do some cutting for you, too.