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Comments about Interfit Photographic Interfit Photographic 28 watt, Replacement Fluorescent Bulb for INT 116, INT 117, INT 111, INT 112, INT 113, INT 216, & INT 217:
Use this bulb in conjunction with other fluorsecent bulbs to light the subject of your photograph. The more bulbs used the brighter the subject. I install 9 bulbs per soft box and than select the number of bulbs needed for the shot.