<SEC-DOCUMENT>0001095449-12-000007.txt : 20120213
<SEC-HEADER>0001095449-12-000007.hdr.sgml : 20120213
<ACCEPTANCE-DATETIME>20120213163519
ACCESSION NUMBER:		0001095449-12-000007
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20120213
DATE AS OF CHANGE:		20120213

SUBJECT COMPANY:	

	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:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-19763
		FILM NUMBER:		12599622

	BUSINESS ADDRESS:	
		STREET 1:		4625 RED BANK ROAD, SUITE 200
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45227
		BUSINESS PHONE:		4165936543

	MAIL ADDRESS:	
		STREET 1:		2300 YONGE STREET, P.O. BOX 2408
		STREET 2:		SUITE 1710
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M4P 1E4

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ELIOT ROSE ASSET MANAGEMENT LLC
		CENTRAL INDEX KEY:			0001213968
		IRS NUMBER:				043649045
		STATE OF INCORPORATION:			RI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		1000 CHAPEL VIEW BOULEVARD
		STREET 2:		SUITE 240
		CITY:			CRANSTON
		STATE:			RI
		ZIP:			02920
		BUSINESS PHONE:		(401) 588-5100

	MAIL ADDRESS:	
		STREET 1:		1000 CHAPEL VIEW BOULEVARD
		STREET 2:		SUITE 240
		CITY:			CRANSTON
		STATE:			RI
		ZIP:			02920
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>a13g.txt
<DESCRIPTION>SCHEDULE 13G FOR DECEMBER 31, 2011
<TEXT>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C.  20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. ____)*


CECO Environmental Corp.
(Name of Issuer)

Common Stock
(Title of Class of Securities)

125141101
(CUSIP Number)

December 31, 2011
(Date of Event which Requires
Filing of this Statement)


Check the appropriate box to designate the rule pursuant to
which this Schedule is filed:

    [X]  Rule 13d-1(b)
    [ ]  Rule 13d-1(c)
    [ ]  Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect
to the subject class of securities, and for any subsequent
amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section
18 of the Securities Exchange Act of 1934 ("Act") or
otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act
(however, see the Notes).


CUSIP No. 125141101	SCHEDULE 13G	Page 2 of 7


1	Name of Reporting Person	Eliot Rose Asset Management, LLC
	IRS Identification No. of Above Person	04-3649045

2	Check the Appropriate Box if a Member of a Group
			(a)	[ ]
			(b)	[ ]

3	SEC USE ONLY


4	Citizenship or Place of Organization

		Rhode Island

			5	Sole Voting Power

				697,300

	NUMBER OF	6	Shared Voting Power
	SHARES
	BENEFICIALLY			-0-
	OWNED BY EACH
	REPORTING	7	Sole Dispositive Power
	PERSON WITH
				697,300

		8	Shared Dispositive Power

				-0-

9	Aggregate Amount Beneficially Owned by each Reporting
Person

	697,300

10	Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares*	      [ ]

11	Percent of Class Represented by Amount in Row 9

	4.8%

12	Type of Reporting Person*

	OO, IA


CUSIP No. 125141101	SCHEDULE 13G	Page 3 of 7


1	Name of Reporting Person	Gary S. Siperstein
	IRS Identification No. of Above Person

2	Check the Appropriate Box if a Member of a Group
			(a)	[ ]
			(b)	[ ]

3	SEC USE ONLY


4	Citizenship or Place of Organization

		United States

			5	Sole Voting Power

				697,300

	NUMBER OF	6	Shared Voting Power
	SHARES
	BENEFICIALLY			-0-
	OWNED BY EACH
	REPORTING	7	Sole Dispositive Power
	PERSON WITH
				697,300

		8	Shared Dispositive Power

				-0-

9	Aggregate Amount Beneficially Owned by each Reporting
Person

	697,300

10	Check Box if the Aggregate Amount in Row (9) Excludes
Certain Shares*	      [ ]

11	Percent of Class Represented by Amount in Row 9

	4.8%

12	Type of Reporting Person*

	OO, IN


 CUSIP No. 125141101	SCHEDULE 13G	Page 4 of 7


Item 1(a).	Name of Issuer.

	CECO Environmental Corp.

Item 1(b).	Address of Issuer's Principal Executive Offices.

	4625 Red Bank Road, Suite 200, Cincinnati, OH  45227

Item 2(a).	Names of Persons Filing.

	Eliot Rose Asset Management, LLC and Gary S. Siperstein.

Item 2(b).	Address of Principal Business Office or, if none,
Residence.

	The office address for Eliot Rose Asset Management, LLC
and Gary S. Siperstein is 1000 Chapel View Boulevard.
Cranston, RI  02920

Item 2(c).	Citizenship.

	Eliot Rose Asset Management, LLC is a Rhode Island
limited liability company, Gary S. Siperstein is a United
States citizen.

Item 2(d).	Title of Class of Securities.

	Common Stock

Item 2(e).	CUSIP Number.

	125141101

Item 3.	If this statement is filed pursuant to 240.13d-
1(b) or 240.13d-2(b) or (c), check whether the person filing
is a:

(a)  [ ] Broker or dealer registered under section 15 of the
Act (15 U.S.C. 78o).

(b)  [ ] Bank as defined in section 3(a)(6) of the Act (15
U.S.C. 78c).

(c)  [ ] Insurance company as defined in section 3(a)(19) of
the Act (15 U.S.C. 78c).

(d)  [ ] Investment company registered under section 8 of the
Investment Company act of 1940 (15 U.S.C. 80a-8).


CUSIP No. 125141101	SCHEDULE 13G	Page 5 of 7


(e)  [X] An investment adviser in accordance with 240.13d-
1(b)(1)(ii)(E).

(f)  [ ] An employee benefit plan or endowment fund in
accordance with 240.13d-1(b)(1)(ii)(F).

(g)  [X] A parent holding company or control person in
accordance with 240.13d-1(b)(1)(ii)(G). (for Gary Siperstein
only)

(h)  [ ] A savings association as defined in Section 3(b) of
the Federal Deposit Insurance Act (12 U.S.C. 1813).

(i)  [ ] A church plan that is excluded form the definition
of an investment company under section 3(c)(14) of the
Investment Company act of 1940 (15 U.S.C. 80a-3).

(j)  [ ] A non-U.S. institution in accordance with Rule
240.13d-1(b)(1)(ii)(J);

(k)  [ ] Group, in accordance with 240.13d-1(b)(1)(ii)(J).

If filing as a non-U.S. institution in accordance with Rule
240.13d-1(b)(1)(ii)(J), please specify the type of
institution: ______

Item 4.	Ownership.

	Reference is made hereby made to Items 5-9 and 11 of
pages two (2) and three (3) of this Schedule 13G, which Items
are incorporated by reference herein.


Item 5.	Ownership of Five Percent or Less of a Class.

	If this statement is being filed to report the fact that
as of the date hereof the reporting person has ceased to be
the beneficial owner of more than five percent of the class
of securities, check the following [X].

Item 6.	Ownership of More Than Five Percent on Behalf of
Another Person.

	Eliot Rose Asset Management, LLC is deemed to be the
beneficial owner of the number of securities reflected in
Item 5-9 and 11 of page two (2) of this Schedule 13G pursuant
to separate arrangements whereby it acts as investment
adviser to certain persons.  Each person for whom Eliot Rose
Asset Management, LLC acts as investment adviser has the
right to


CUSIP No. 125141101	SCHEDULE 13G	Page 6 of 7


receive or the power to direct the receipt of dividends from,
or the proceeds from the sale of, the Common Stock purchased
or held pursuant to such arrangements.  Gary S. Siperstein is
deemed to be the beneficial owner of the number of securities
reflected in Items 5-9 and 11 on page three (3) of this
Schedule 13G pursuant to his ownership interest in Eliot Rose
Asset Management, LLC.

	This Schedule 13G is filed to reflect that, for a period
during the year 2011, Eliot Rose Asset Management, LLC owned
shares of the Issuer in excess of 5% of the outstanding
shares.  At year-end, this was reduced to less than 5%.

Item 7.	Identification and Classification of the
Subsidiary which Acquired the Security Being Reported on by
the Parent Holding Company.

	Not applicable.

Item 8.	Identification and Classification of Members of
the Group.

	Not applicable.

Item 9.	Notice of Dissolution of Group.

	Not applicable.

Item 10.	Certification.

	By signing below, Eliot Rose Asset Management, LLC and
Gary S. Siperstein certify that, to the best of their
knowledge and belief, the securities referred to above on
pages two (2) and three (3), respectively, of this Schedule
13G were acquired and are held in the ordinary course of
business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing the
control of the issuer of the securities and were not acquired
and are not held in connection with or as a participant in
any transaction having that purpose or effect.


CUSIP No. 125141101	SCHEDULE 13G	Page 7 of 7


Signature


	After reasonable inquiry and to the best of its knowledge
and belief, the undersigned certifies that the information
set forth in this statement is true, complete and correct.


DATED:	January 17, 2012

	Eliot Rose Asset Management, LLC


	/S/ Gary S. Siperstein
	_____________________________
	By:  Gary S. Siperstein
	its: Managing Member


	Gary S. Siperstein


	/S/ Gary S. Siperstein
	_____________________________
	By:  Gary S. Siperstein

Attention: Intentional misstatements or omissions of fact
constitute Federal criminal violations (See 18 U.S.C. 1001)
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>