2" taller than the Standard Windshield.
Tall=16.5" vs. Standard=14.5"
Direct replacements for the originals, tall BMW windshields are constructed from scratch-resistant 6mm GE FMR Lexan polycarbonate sheet stock. Considered the best material for this purpose, it is optically clear when viewed at 90 degrees.
Dimensional weight listed
BMW R1150RT Touring Windshield
BMW Original Parts