The FCI 87900-438HLF is a 38-position dual-row unshrouded male pin header from the BERGSTIK® II series, designed for board-to-board interconnect applications on a standard 0.100" (2.54mm) pitch.
The push-pull fastening type and 0.100" (2.54mm) row spacing are standard for this class of header, making it a drop-in fit for any 0.100" grid dual-row footprint.
The 38-position count on a dual-row layout means 19 positions per row, which is a less common count than the standard 20 or 40 positions. The overall contact length of 0.940" (23.88mm) and 0.720" (18.29mm) mating length give a tall profile above the board — check your enclosure height clearance.
