Certificate of RegistrationThis certifies that the Quality Management System of

CTA Acoustics - Corbin100 CTA Boulevard

Corbin, Kentucky, 40701, United States

has been assessed by NSF-ISR and found to be in conformance to the following standard(s):

ISO/TS 16949:2009

Scope of Registration:Design and Manufacturing of Thermal and Acoustical Products.

Exclusions: None

IATF Certificate Number: 0255304

Carl Blazik,Director, Technical Operations & Business Units,NSF-ISR, Ltd.

Page 1 of 3

Certificate Number: C0109062-TS4Certificate Issue Date: 22-DEC-2016Registration Date: 21-DEC-2016Expiration Date *: 14-SEP-2018

This Annex is only Valid in connection with the above-mentioned certificate issued by NSF-ISR

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ANNEX PAGE FOR CERTIFICATE REGISTRATION NUMBER C0109062-TS4

IATF CERTIFICATION NUMBER: 0255304CERTIFICATE ISSUE DATE: 22-DEC-2016

CERTIFICATE EXPIRATION DATE: 14-SEP-2018CTA Acoustics - Corbin

100 CTA BoulevardCorbin, Kentucky, 40701, United States

Remote Location: CTA Acoustics

25211 Dequindre RoadMadison Heights, Michigan, 48071, United States

Scope:Sales, Marketing and Engineering

Remote Location: CTA Acoustics, Inc9670 Maple Street

Orland, Indiana, 46776, United States

Scope:Warehousing

This Annex is only Valid in connection with the above-mentioned certificate issued by NSF-ISR

Page 3 of 3

ANNEX PAGE FOR CERTIFICATE REGISTRATION NUMBER C0109062-TS4

IATF CERTIFICATION NUMBER: 0255304CERTIFICATE ISSUE DATE: 22-DEC-2016

CERTIFICATE EXPIRATION DATE: 14-SEP-2018CTA Acoustics - Corbin

100 CTA BoulevardCorbin, Kentucky, 40701, United States

Remote Location: CTA Acoustics

124 Douglas AvenueCorbin, Kentucky, 40701, United States

Scope:Warehousing