Correspondence 0001104659-26-046168 from CECO ENVIRONMENTAL CORP (CECO)
CECO ENVIRONMENTAL CORP
Date: April 21, 2026 · CIK: 0000003197 · Accession: 0001104659-26-046168
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File numbers found in text: 333-294924
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CORRESP
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CECO Environmental Corp.
5080 Spectrum Drive, Suite 800E
Addison, Texas 75001
April 21, 2026
VIA EDGAR
Matthew Crispino
Securities and Exchange Commission
Division of Corporation Finance
Office of Energy & Transportation
100 F Street, NE
Washington, D.C. 20549-3561
Re: CECO Environmental Corp.
Registration Statement on Form S-4, as
amended
File No. 333-294924
Dear Mr. Crispino:
Pursuant to Rule 461
under the Securities Act of 1933, as amended (the “Act”), CECO Environmental Corp. (the “Company”) hereby requests
acceleration of the effective date of the above-referenced Registration Statement to 4:00 p.m., Eastern Time, on April 22, 2026, or as
soon thereafter as practicable, or at such other time as the Company or its outside counsel, Gibson, Dunn & Crutcher LLP, requests
by telephone that such Registration Statement be declared effective. In making this acceleration request, the Company acknowledges that
it is aware of its obligations under the Act.
Please contact Jonathan Whalen of Gibson, Dunn
& Crutcher LLP by telephone at (214) 698-3196 or via email at JWhalen@gibsondunn.com as soon as the Registration Statement has been
declared effective, or if you have any other questions regarding this matter. We also respectfully request that a copy of the written
order from the Commission verifying the effective time of such Registration Statement be sent to Mr. Whalen via email at JWhalen@gibsondunn.com.
Sincerely,
CECO Environmental Corp.
/s/ Alyson Gregory
Alyson Gregory
General Counsel and Corporate Secretary
cc: Jonathan Whalen, Gibson, Dunn &
Crutcher LLP