Exhibit 99.1350CERT
Certification Pursuant to Rule 30a-2(b) under the 1940 Act and
Section 906 of the Sarbanes Oxley Act
Pursuant to 18 U.S.C. § 1350, the undersigned officer of BlackRock Focus Growth Fund, Inc. and Master
Focus Growth LLC (the “registrants”), hereby certifies, to the best of his knowledge, that the registrants'
Report on Form N-CSR for the period ended August 31, 2010 (the “Report”) fully complies with the
requirements of Section 15d of the Securities Exchange Act of 1934, as amended, and that the information
contained in the Report fairly presents, in all material respects, the financial condition and results of
operations of the registrants.
Date: November 5, 2010
/s/ John M. Perlowski
John M. Perlowski
Chief Executive Officer (principal executive officer) of
BlackRock Focus Growth Fund, Inc. and Master Focus Growth LLC
Pursuant to 18 U.S.C. § 1350, the undersigned officer of BlackRock Focus Growth Fund, Inc. and Master
Focus Growth LLC (the “registrants”), hereby certifies, to the best of his knowledge, that the registrants'
Report on Form N-CSR for the period ended August 31, 2010 (the “Report”) fully complies with the
requirements of Section 15d of the Securities Exchange Act of 1934, as amended, and that the information
contained in the Report fairly presents, in all material respects, the financial condition and results of
operations of the registrants.
Date: November 5, 2010
/s/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock Focus Growth Fund, Inc. and Master Focus Growth LLC
This certification is being furnished pursuant to Rule 30a-2(b) under the Investment Company Act of 1940,
as amended, and 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the
Securities and Exchange Commission.
