Exhibit 32.2​

Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350
as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Michael Dee, Chief Financial and Accounting Officer of Graf Industrial Corp. (the “Company”), hereby certify, that, to my knowledge:

1.

the Annual Report on Form 10-K for the year ended December 31, 2018 (the “Report”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) or 78o(d)); 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: April 1, 2019

/s/ Michael Dee

Michael Dee
Chief Financial Officer
(Principal Financial and Accounting Officer)