SJT ENTERPRISES, INC. Mermaids Welcome 5" x 10" Primitive Wood Plaque, Sign (SJT94387) This USA MADE sign will brighten your day every time you look at it! Made of very solid MDF wood fiberboard. Measures 5" x 10" and 1/4" thick. Twine is securely stapled to the back. Intended for indoor use only. Not weather resistant. Great for yourself or makes a great gift for friends or family!