There are 2 drawings for part 34930 available in AirCorps Library

Manufacturer's Drawing

Vickers,   Spitfire Drawings,   Page: 13,   Revision: D  

DRAUGHT EXCLUDER (WINDSCREEN.)

Associated Aircraft:   SPIT  

Manufacturer's Drawing

Vickers,   Spitfire Drawings,   Page: 15,   Revision: n/a  

DRAUGHT EXCLUDER (WINDSCREEN)

Associated Aircraft:   SPIT