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This is a basic battery/speaker/soundboard case for use with a Graflex 3-cell flashgun or 1.5" sinktube. The speaker grille is on "stilts," both to make leave room screws and also to provide a bit of a resonance chamber. Note the you will probably need to snip off one of the legs to accommodate the screw(s) holding the D-ring or Kobold. The shoulder on the top side of the tube is deep enough to allow you shorten it by a few millimeters if you need to. You can drill or stamp holes in the lid to accommodate hardware and wiring.