SEC Form 4 
FORM 4	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 	  
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	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).			
1. Name and Address of Reporting Person*
ERAZMUS WALTER T	

(Last)	(First)	(Middle)	

(Street) 

(City)	(State)	(Zip)	
	2. Issuer Name and Ticker or Trading Symbol 
GIBRALTAR STEEL CORP [ Rock ] 	5. Relationship of Reporting Person(s) to Issuer 
(Check all applicable) 
	Director		10% Owner	
X	Officer (give title below)		Other (specify below)	
President	
		
	3. Date of Earliest Transaction (Month/Day/Year)
07/21/2003 		
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) 
X	Form filed by One Reporting Person	
	Form filed by More than One Reporting Person	
	
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned	
1. Title of Security (Instr. 3) 	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8) 	4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 	5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 	7. Nature of Indirect Beneficial Ownership (Instr. 4) 	
			Code	V	Amount	(A) or (D)	Price				
Common stock	07/21/2003(1) 		J(1) 		12.5	A	18.76(1) 	5,564.53(2) 	I	Gibraltar Steel Corporation 401(k) Savings Plan	
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities) 	
1. Title of Derivative Security (Instr. 3) 	2. Conversion or Exercise Price of Derivative Security 	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8) 	5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 	6. Date Exercisable and Expiration Date (Month/Day/Year)	7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 	8. Price of Derivative Security (Instr. 5) 	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 	11. Nature of Indirect Beneficial Ownership (Instr. 4) 	
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares					
Option (right to buy)(3) 	11	08/08/1988(4) 		J		0		11/06/1996	11/05/2005	Common stock	0	$0 	5,375	D		
Option (right to buy)(3) 	16.75	08/08/1988(4) 		J		0		07/08/1997	07/07/2006	Common stock	0	$0 	15,000	D		
Option (right to buy)(3) 	21.75	08/08/1988(4) 		J		0		07/08/1998	07/08/2007	Common stock	0	$0 	15,000	D		
Option (right to buy)(3) 	22.5	08/08/1988(4) 		J		0		03/27/1999	03/27/2008	Common stock	0	$0 	2,500	D		
Option (right to buy)(3) 	15.625	08/08/1988(4) 		J		0		10/08/1999	10/07/2008	Common stock	0	$0 	15,000	D		
Option (right to buy)(3) 	14.07	08/08/1988(4) 		J		0		07/18/2001	07/18/2010	Common stock	0	$0 	12,500	D		
Explanation of Responses:	
1. Represents net effect of shares purchased and sold from April 1, 2003 to June 30, 2003 pursuant to the Gibraltar Steel Corporation 401(k) Savings Plan at an average price of $18.76 per share. The information reported herein is based on a Plan Statement dated July 17, 2003.	
2. Reporting Person also owns 20,375 shares of common stock directly; 800 shares of common stock indirectly in an Individual Retirement Account for the benefit of the reporting person; and 500 shares of common stock indirectly in an Individual Retirement Account for the benefit of the reporting person's wife.	
3. Grant to reporting person of option to purchase shares of common stock under the Gibraltar Steel Corporation Incentive Stock Option Plan. The options are exercisable at the rate of 25% per year.	
4. Dummy date used to report holdings.	
	/s/Walter T. Erazmus	07/21/2003	
	** Signature of Reporting Person	Date	
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.	
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).	
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).	
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.