Exodus 27:8 The altar is to be hollow, boarded in with wood; make it from the design which you saw on the mountain. (BBE)
Exodus 38:7 He put the rods through the rings at the opposite sides of the altar for lifting it; he made the altar hollow, boarded in with wood. (BBE)
2 Chronicles 3:5 And the greater house he boarded with cypress-wood, which he overlaid with fine gold, and set on it palm-trees and chains. (DBY)