The inner sanctuary was twenty cubits long, twenty cubits wide, and twenty cubits high. He overlaid the inside with pure gold, and he also overlaid the altar of cedar.
Jewish Publication Society of America Version (JPS1917) - 1 Kings 6:20 >And before the Sanctuary which was twenty cubits in length, and twenty cubits in breadth, and twenty cubits in the height thereof, overlaid with pure gold, he set an altar, which he covered with cedar.