Amendment No. 5 To Acuity Brands, Inc. Supplemental Deferred Savings Plan

EXHIBIT 10(iii) A (6)

AMENDMENT NO. 5

TO

ACUITY BRANDS, INC.

SUPPLEMENTAL DEFERRED SAVINGS PLAN THIS AMENDMENT made as of the 26th day of June, 2007, by ACUITY BRANDS, INC. (the " Company" ); W I T N E S S E T H :

WHEREAS, the Company maintains the Acuity Brands, Inc. Supplemental Deferred Savings Plan (the " Plan" ); and

WHEREAS, the Company desires to ...