hoodbase for both hoods  
 
 

the hoodbase can be used for both matteboxes, 4x4" and 4x5.65", each hoodflap can be fixed fast and safe with two knurled screws. It comes with all eight necessary srews.

The aspect ratio of the hoodbase is 16:9, though 4:3 shooting is still possible, but it looks better...