Griffon Corporation Declares Quarterly Dividend

NEW YORK–(BUSINESS WIRE)–The Board of Directors of Griffon Corporation (NYSE: GFF) (the “Company”
or “Griffon”) declared a regular quarterly cash dividend of $0.06 per
share. The dividend is payable on September 21, 2017 to shareholders of
record as of the close of business on August 24, 2017.

About Griffon Corporation

Griffon is a diversified management and holding company that conducts
business through wholly-owned subsidiaries. Griffon oversees the
operations of its subsidiaries, allocates resources among them and
manages their capital structures. Griffon provides direction and
assistance to its subsidiaries in connection with acquisition and growth
opportunities as well as in connection with divestitures. In order to
further diversify, Griffon also seeks out, evaluates and, when
appropriate, will acquire additional businesses that offer potentially
attractive returns on capital.

Headquartered in New York, N.Y., the Company was founded in 1959 and is
incorporated in Delaware. Griffon is listed on the New York Stock
Exchanges and trades under the symbol GFF.

Griffon currently conducts its operations through three reportable
segments:

• Home & Building Products consists of two companies, The AMES
  Companies, Inc. (“AMES”) and Clopay Building Products Company,
  Inc. (“CBP”):
  • AMES, founded in 1774, is the leading U.S. manufacturer and a
    global provider of long-handled tools and landscaping products for
    homeowners and professionals.
  • CBP, since 1964, is a leading manufacturer and marketer of
    residential and commercial garage doors and sells to professional
    dealers and some of the largest home center retail chains in North
    America.
• Telephonics Corporation, founded in 1933, is recognized globally as a
  leading provider of highly sophisticated intelligence, surveillance
  and communications solutions for defense, aerospace and commercial
  customers.
• Clopay Plastic Products Company, Inc., incorporated in 1934, is a
  global leader in the development and production of embossed, laminated
  and printed specialty plastic films for hygienic, health-care and
  industrial products and sells to some of the world’s largest consumer
  products companies.

For more information on Griffon and its operating subsidiaries, please
see the Company’s website at www.griffon.com.

Contacts

Griffon Corporation:
Brian G. Harris, 212-957-5000
SVP
& Chief Financial Officer
or
Investor Relations:
ICR
Inc.
Michael Callahan, 203-682-8311
Senior Vice President