Albert Barnes Commentary 1 Kings 6:4

"And for the house he made windows of fixed lattice-work." — 1 Kings 6:4 (ASV)

Windows of narrow lights - This refers to one of two things: either, as a marginal note suggests, windows that were mere slits on the outside but opened wide on the inside, like those in old castles; or, more probably, windows with fixed lattices. These windows seem to have been placed high in the walls, above the chambers described in 1 Kings 6:5–8.