4092 Large Red Oak box newel posts have a pedestal size of 7-1/2 inch x 7-1/2 inch and an overall length of 55 inches.  Pedestal wall is 3/4" with the main shank at 6 inches net. 

The 4092 Box Newels are made with lock mitered corners, which means they have no end grains, developing elegance. 

4092 Red Oak Box Newel Post