I am looking for styrofoam letters to deco with flowers for a wedding. They need to be at least 24" by 18"

Any place online you can steer me would be appreciated!

I am looking for styrofoam letters to deco with flowers for a wedding. They need to be at least 24" by 18"
most craft, hobby, art supply, and even many office supply stores have them. go to the nearest one in your area. avoid shipping costs!

pores