hey jelly, the bigger frospawn is accually 4 heads, the only time you can see the number of heads is when the lights have been out for along time and it has closed up. Ill still sell it as a 3 head though since I already told you. As for size I can only guess. each head when open is about the size of a softball so figure four baseballs side by side. Also these are not fresh cut, I cut and mounted them several months ago so they look dont look like frags. the big one os on a decent size rock that is fairly flat so it will be easy to possition. I have another one that has three or more heads but the way it has grown only opens up the size of about two heads. Anyway your more than welcome to come by and check them out and see what you think.