For the galleries were higher than these. — Translate this verse, And the upper chambers were shortened, because the galleries took off from them (literally, eat of them) in comparison with the lower and the middle [chambers] of the building. The building was in three storeys (Ezekiel 42:6), like the chambers round the Temple, but the gallery is mentioned only in connection with the third (Ezekiel 42:3). As it must have been taken out of the width of the chambers, it made those of the third storey narrower.
Related Commentaries of Ezekiel 42:5
Ezekiel 42:5
5 Now the upper chambers were shorter: for the galleries were highera than these, than the lower, and than the middlemost of the building.