Each
cyc "
cell" is supposed to have a frame and
safety screen. If the frames are hinged, you need to cut the correct size
gel and sandwich it in and close it like any other
gel frame. If they are a 2 piece frame, you have to put the
gel in and use brads to fasten it together. If you have
Altman's, or L&E's, yours are probably the type that need brads. If you have just a frame and there is no hinge or second piece to it (i.e. you don't have anywhere to put a
gel) you are probably missing parts.
Note:
cyc lamps can explode, so screens are necessary.
EDIT: I just reread your post and it sounds like you have the type that need brads. Ideally, the 2 frames that don't have the
screen would be bradded together with a
gel in the middle. The 2 empty frames have holes near the corners, right? Also, I know on some, the holes won't
line up unless they are in a certain orientation - one can't be sideways or upside down.
Safety screen goes behind the
gel frame. There should be a second slot for it. Hope this helps.