3/8 - 24 3/4" deep 
8 places on 8'' DBC 
1/4 - 28 3/4 deep 
8 places on 7-1/4 DBC 
Figure 2a. 
flange for the 7-inch diameter EDU window, the seat and 
Dimensions of window seat and opening diameter in the test 
opening in the test flange are the same as in the EDU chamber 
window flanges. 
