<SEC-DOCUMENT>0001193125-22-137011-index.html : 20220502
<SEC-HEADER>0001193125-22-137011.hdr.sgml : 20220502
<ACCEPTANCE-DATETIME>20220502171618
ACCESSION NUMBER:		0001193125-22-137011
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20220502
DATE AS OF CHANGE:		20220502

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CECO ENVIRONMENTAL CORP
		CENTRAL INDEX KEY:			0000003197
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFYING EQUIP [3564]
		IRS NUMBER:				132566064
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-264623
		FILM NUMBER:		22883247

	BUSINESS ADDRESS:	
		STREET 1:		14651 NORTH DALLAS PARKWAY
		STREET 2:		SUITE 500
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254
		BUSINESS PHONE:		(513) 458-2600

	MAIL ADDRESS:	
		STREET 1:		4625 RED BANK ROAD
		STREET 2:		SUITE 200
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45227

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	API ENTERPRISES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALARM PRODUCTS INTERNATIONAL INC
		DATE OF NAME CHANGE:	19851210
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>d209779ds3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: d209779ds3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d209779dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d209779dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>d209779dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: d209779dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>4
<FILENAME>d209779dexfilingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 4 - file: d209779dexfilingfees.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g209779g52b39.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g209779g52b39.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g209779g60e04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g209779g60e04.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g209779g79c77.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g209779g79c77.jpg

</DOCUMENT>
</SEC-DOCUMENT>