SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

Name of Issuer		Black Box Corporation
Title of Class of Securities	common
CUSIP Number		091826107
Date of Event Which Requires Filing this Statement		12/31/03

#1	Alex. Brown Investment Management, A Maryland Limited Partnership
	52-1349876
#4	Maryland
#5	270,900
#6	0
#7	986,230
#8	0
#9	986,230
#11	5.4%
#12	PN	IA
Item 1.
(a)	Black Box Corporation
(b) 1000 Park Drive
Lawrence, PA 15055
Item 2.
(a)	Alex. Brown Investment Management, a Maryland Limited Partnership
, and a registered investment advisor.
(b)	217 E. Redwood Street, #1400
Baltimore, MD  21202
(c)	The firm is organized under the laws of Maryland.  The individual
 general partner is a citizen of the United States of America.
(d)	common
(e)	091826107
Item 3.
(a)
(b)
(c)
(d)
X	(e)
(f)
(g)
(h)
CUSIP Number		091826107
Item 4.
(a)	986,230 shares of common stock
(b)	5.4%
(c)
(i)	270,900 shares
(ii)	0 shares
(iii)	986,230 shares
(iv)	0 shares
Item 5.	Not Applicable
Item 6.	Not Applicable
Item 7.	Not Applicable
Item 8.	Not Applicable
Item 9.	Not applicable

Item 10.
By signing below I certify that, to the best of my knowledge and belief, the
 securities referred to above were acquired in the ordinary course of business
 and were not acquired for the purpose of and do not have the effect of changing
 or influencing the control of the issuer of such securities and were not
 acquired
 in connection with or as a participant in any transaction having such purpose
 or effect.

Signature:
After reasonable inquiry and to the best of my knowledge and belief, I
 certify that information set forth in this statement is true, complete
 and correct.

ALEX. BROWN INVESTMENT MANAGEMENT
A Maryland Limited Partnership


By:
Lee S. Owen
Principal

Date:  February 17,2004