what are styrofoam blocks underneath boat seats called & where to buy?
first, welcome aboard.
need more context, however going to make some assumptions and try to guess since I cant read minds.
you have a small open utility or fishing boat with flotation foam in the seats
and somehow that was damaged.....
you can either use rigid foam insulation and cut pieces to fit, or you can get 2# expanding foam and fill the seats
again, I am assuming here without anything more than your comment. pics would be nice, what exactly you are working on would be nice as well.
