CFR›Title 16›Chapter II›Part 1633›Appendix Figure 4 to Part 1633 CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Figure 4 to Part 1633—Details of Vertical Burner Head Previous Figure 3 to Part 1633 Figure 3 to Part 1633—Details of Horizontal Burner Head Next Figure 5 to Part 1633 Figure 5 to Part 1633—Details of Burner Stand-off