ETFIS Series Trust I (PFFR) N-CSRS Certified semi-annual shareholder report (management investment company)

Exhibit 99.906

Certification Pursuant to Rule 30a-2(b) under the 1940 Act and Section 906 of the Sarbanes-Oxley Act

I, William J. Smalley, President and Principal Executive Officer of ETFis Series Trust I (the “Registrant”), certify that:

1. The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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

Date:   4/03/2019	/s/ William J. Smalley
	William J. Smalley, President and Principal Executive Officer
	(Principal Executive Officer)

I, Brinton Frith, Treasurer and Principal Financial Officer of ETFis Series Trust I (the “Registrant”), certify that:

1. The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

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

Date:    4/03/2019	/s/ Brinton W. Frith
	Brinton Frith, Treasurer and Principal Financial Officer
	(Principal Financial Officer)