see also:
Durst Vegaset 66
Film Holders#Durst film holders

This is the Durst Sivogla AN Anti Newton glass insert. It is used in the upper part of the negative carriers and it prevents the formation of Newton rings when a negative is placed in the carrier.
The glass measures 64 x 75mm. Please see below for an overview of all compatible negative carriers.
Compatible Durst negative carriers (and enlargers):
- Durst Lidineg (M370)
- Durst Sivoneg (M601)
- Durst Sirioneg (M605)
- Durst Unineg (M670)
- Durst Sinoneg (M707, AC707, Modular 70)
- Durst Cosixneg (AC650)
If your carrier is not listed here, please consult your enlargers documentation or measure the part of the carrier where the glass goes to determine if this glass is compatible.