Janus International (JBI) 10-Q 2022 Q3 Quarterly report

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Janus International Group, Inc. (the “Company”) on Form 10-Q for the quarter ended October 1, 2022, as filed with the Securities and Exchange Commission (the “Report”), I, Ramey Jackson, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted puruant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 10, 2022	By:	/s/ Ramey Jackson
		Ramey Jackson
		Chief Executive Officer
		(Principal Executive Officer)