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    ACCESSION NUMBER:		0001193125-21-117463
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20210525
    FILED AS OF DATE:		20210415
    DATE AS OF CHANGE:		20210415

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-07099
    		FILM NUMBER:		21827972

    	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
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