2.54mm Pitch Elevated 20mm Female Header Connector Dual Row Long Leg Stacking PCB Socket

Twenty millimetres of separation is more than a spacing decision; it is usually a thermal or mechanical one. A power board needs airflow across its heat sink, a transformer needs clearance beneath a control board, or a display needs room for its backlight inverter. This elevated 2.54mm dual row female header holds that gap with a 20mm moulded tower, so the distance is defined by the connector instead of by a set of brass standoffs that have to be ordered, placed and torqued