Press Release

NEW YORK, NEW YORK, April 29, 2010 – Griffon Corporation (NYSE: GFF) announced today that it will release the Company’s financial results for the second quarter of fiscal year 2010 on Thursday, May 6, 2010, followed by a conference call at 4:30 PM ET.

The call can be accessed by dialing 1-877-407-0784 (U.S. participants) or (201) 689-8560 (International participants). Callers should ask to be connected to Griffon Corporation’s second quarter fiscal 2010 teleconference and provide the conference ID number 350157.

A replay of the call will be available starting on May 6, 2010 at 7:30 PM ET by dialing 1-877-660-6853 (U.S.) or (201) 612-7415 (International). The replay account number is 3055 with access code 350157. The replay will be available through May 20, 2010.

Griffon Corporation

Griffon currently conducts its operations through Telephonics Corporation (“Telephonics”), Clopay Building Products Company (“Building Products”) and Clopay Plastic Products Company (“Plastics”).

Griffon currently conducts its operations through Telephonics Corporation, Clopay Building Products Company and Clopay Plastic Products Company.

• Telephonics’ high-technology engineering and manufacturing capabilities provide integrated information, communication and sensor system solutions to military and commercial markets worldwide.
   
• Building Products is a leading manufacturer and marketer of residential, commercial and industrial garage doors to professional installing dealers and major home center retail chains.
   
• Plastics is an international leader in the development and production of embossed, laminated and printed specialty plastic films used in a variety of hygienic, health-care and industrial applications.

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