2 Kings 16:18

Overview - 2 Kings 16
Ahaz's wicked reign.
Ahaz, assailed by Rezin and Pekah, hires Tiglath-pileser against them.
10 Ahaz, sending a pattern of an altar from Damascus to Urijah, diverts the brazen altar to his own devotions.
17 He spoils the temple.
19 Hezekiah succeeds him.
Treasury of Scripture Knowledge

2 Kings 16:18  (King James Version)
And the covert for the sabbath that they had built in the house, and the king's entry without, turned he from the house of the LORD for the king of Assyria.

the covert
There are a great number of conjectures concerning this covert; but it is probable that it was either, as Locke supposes, a sort of shelter or canopy erected for the people on the sabbath when the crowd was too great for the porch to contain them; or, as Dr. Geddes supposes, a seat, covered with a canopy, placed on an elevation, for the king and his court, when they attended public worship.
11:5 1 Kings 10:5 ; Ezekiel 46:2