Roadbed Dimensions for HO

Hi.

I’m looking for the dimensions of cork roadbed for HO scale. More specifically height, the width on the top, and the width on the bottom.

Thanks!

http://cs.trains.com/trccs/forums/p/157540/1738330.aspx

Smile,
Stein

MidWest HO cork-3/16" thick. 1 and 7/8" at the base. A little over 1 and 1/2" at the shoulder.