It's 12' long, 8' high and 5' 5" wide. There is one door, a large window and lots of little windows to let in natural light.
The library and the writing center are inside the fort.
And how many boxes? 281
From years past...
2019---
http://metamoracommunityprek.blogspot.com/2019/01/the-cereal-box-show-cbf-11.html
2018---
http://metamoracommunityprek.blogspot.com/2018/01/cbf-x.html
2017---
http://metamoracommunityprek.blogspot.com/2017/01/my-impenetrable-cereal-box-fort-version_30.html
2016---
http://metamoracommunityprek.blogspot.com/2016/01/my-impenetrable-cereal-box-fort-version.html
2010-2014---
http://metamoracommunityprek.blogspot.com/2014/02/my-impenetrable-cereal-box-fort-version.html