1 Kings 6:4 - Ellicott's Commentary On The Whole Bible

Windows of narrow lights. — The marginal reading, “windows broad within and narrow without” — splayed as in ordinary Gothic architecture — is supported by very good authorities; but the most probable meaning is “windows with fixed beams” — that is, with fixed lattices, like jalousies, useful for ventilation, but immovable, so that no one could look out or in.