Yep, that's what I use. My cell builder hive is also my finisher, and was just trying to figure how to get the same number of queens in a medium box. I'll just make two cell builders / finishers. No big dilemma. Just didn't want to chop up my deep queen cell frames, but since I only run mediums now, I'll bite the bullet. When I switched to mediums last fall, I never gave my queen rearing equipment a thought. With spring around the corner, I've been seeing what all I have or need, and saw my problem. Thanks again.