What size is the FormBox? Kylie March 22, 2018 15:41 Updated Follow The dimensions of the FormBox are: Length - 467mm Width - 273mm Height - 314mm Related articles What materials can I use with the FormBox? What is the size of the forming bed? So, what's in the box? How long can I use the FormBox for in one session? Which countries do you ship to? Comments 0 comments Article is closed for comments.