Top horizontal section along the curve: 13 & 1/2″
Top horizontal section height (top to bottom): 1 & 5/8″(ends) to 2″ (toward middle)
Middle vertical section from top to bottom: 7 & 7/16″
Middle vertical section width (left to right): 2 & 3/4″
REMEMBER: T-Visors are installed from the inside of the helmet so a little bit of overlap is a good thing.
Fits some deluxe 1:1 scale helmets.