This concrete portion of the North-South party wall for rooms H-10 and H-12 appears to be a continuation of the North-South party wall for rooms H-9 and H-11 by being in line with 7353, 7354, 7355, and 7356, creating the western limit for room H-10 and the eastern limit for room H-12, in line with room H-11 and the western limit for room H-9.
Room H-10 area
Photo facing East
Photo facing West
Sketch of SUs 7332, 7336, 7351, 7352, 7353, 7354, 7355, 7356, 7357, 7358, 7359, 7360, 7361, 7362, 7363, 7398, 7399, 7400, 7401, 7402, 7402, and 7404.