NEW YORK–(BUSINESS WIRE)–Griffon Corporation (“Griffon” or the “Company”) (NYSE:GFF) today
announced it will release the Company’s fiscal second quarter financial
results on Thursday, May 2, 2019, followed by a conference call at 4:30
PM ET.

The call can be accessed by dialing 1-877-407-0792 (U.S. participants)
or 1-201-689-8263 (International participants). Callers should ask to be
connected to the Griffon Corporation teleconference or provide
conference ID number 13689636. Participants are encouraged to dial-in at
least 10 minutes before the scheduled start time.

A replay of the call will be available starting on Thursday, May 2, 2019
at 7:30 PM ET by dialing 1-844-512-2921 (U.S.) or 1-412-317-6671
(International), and entering the conference ID number: 13689636. The
replay will be available through Thursday, May 16, 2019 at 11:59 PM ET.

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.

Griffon currently conducts its operations through two reportable
segments:

• Home & Building Products segment consists of two companies, The AMES
  Companies, Inc. (“AMES”) and Clopay Building Products Company, Inc.
  (“CBP”):

  AMES, founded in 1774, is the leading North
  American manufacturer and a global provider of branded consumer and
  professional tools, landscaping products, and outdoor lifestyle
  solutions. In 2018, we acquired ClosetMaid, a leader in wood and wire
  closet organization, general living storage and wire garage storage
  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. In 2018, we acquired
  CornellCookson, a leading U.S. manufacturer and marketer of rolling
  steel door and grille products designed for commercial, industrial,
  institutional, and retail use.

• Defense Electronics segment consists of Telephonics Corporation,
  founded in 1933, a globally recognized leading provider of highly
  sophisticated intelligence, surveillance and communications solutions
  for defense, aerospace and commercial customers.

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

Investor Relations:
Michael
Callahan, 203-682-8311
Managing Director, ICR Inc.