Table of Contents AZZ INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 2008 Senior Notes Coverage Ratio (as defined in the Note Purchase Agreement) of at least 2.0:1.0; d) not at any time permit the aggregate amount of all Priority Indebtedness (as defined in the Note Purchase Agreement) to exceed 10.0% of Consolidated Net Worth (as defined in the Note Purchase Agreement). On March 31, 2008, the Company entered into a Note Purchase Agreement (the “Note Purchase Agreement”) pursuant to which the Company issued $100.0 million aggregate principal amount of its 6.24% unsecured Senior Notes (the “2008 Notes”) through a private placement (the “2008 Note Offering”). Amounts were due under the Agreement in seven annual installments of $14.3 million commencing in March of 2012 through the March 2018 maturity date. On March 31, 2018, the Company made the final principal payment of $14.3 million to fully settle the 2008 Senior Notes on the scheduled maturity date. As of February 28, 2019, the Company was in compliance with all of its debt covenants. Maturities of debt are as follows (in thousands): Fiscal year: Future Debt Maturities 2020 $ — 2021 125,000 2022 — 2023 116,000 2024 — Thereafter — Total $ 241,000 55