This keyguard will fit the Ultratech Superprint Pro80 TTY. The keyguard is attached to the keyboard with 3M Dual Lock™ recloseable fasteners (included).  

Keyguard is cut from 3/16th inch clear acrylic. Also available in 1/4th inch materials for an additional charge. 

1/8" materials can be ordered, but the holes will be nearly flush with the key caps.  The keyguard will still help to prevent mis-typing, but will not help guide the user to the keys.