Shown here are the variety of stack heights available in the DF12 series which range from 3mm to 5mm in the mated condition. Please note that on the 3mm version, both the receptacle and the header need to be paired correctly for this height. On the 3.5mm, 4mm, and 5mm versions, the header side controls the height, and any receptacle can be used on the mating side except the 3mm receptacle.