The one and a half cubits above and below the grating was equal to the height of the Ark of the Testimony (Exo. 25:10). The fact that the grating of the altar was level with the expiation cover of the Ark signifies that Christ’s redemption was accomplished according to the standard of the requirements of God’s holiness, righteousness, and glory (cf. Rom. 3:24-25). Moreover, the fact that there were one and a half cubits above the grating indicates that the effectiveness of Christ’s redemption, indicated by God’s being satisfied by the fragrant aroma ascending from the sacrifices, also comes up to the standard of God’s requirements.