Webcast Alert TIME CHANGE: Gentex Announces 3rd Quarter 2005 Earnings Conference Call Webcast

ZEELAND, Mich., Oct. 18, 2005 -- Gentex Corporation announces the following Webcast:

  What:     Gentex Third Quarter Earnings Conference Call

  When:     October 19, 2005 @ 9:30 a.m. Eastern

  Where:    http://www.gentex.com/
   
   How:      Live over the Internet -- Simply log on to the web at the
   address above.
   
   Contact:  Lisa Richlich,
   Investor Relations
   616-772-1590 x 207
   Fax: 616-772-7348
   Email: lrichlich@gentex.com

If you are unable to participate during the live webcast, the call will be archived at http://www.gentex.com/ . To access the replay, click on Investor Information Audio Archive.

Founded in 1974, Gentex Corporation (The Nasdaq Stock Market: GNTX) is an international company that provides high-quality products to the worldwide automotive industry and North American fire protection market. Based in Zeeland, Michigan, the company develops, manufactures and markets interior and exterior automatic-dimming automotive rearview mirrors that utilize proprietary electrochromic technology to dim in proportion to the amount of headlight glare from trailing vehicle headlamps. Many of the mirrors are sold with advanced electronic features, and approximately 95 percent of the Company's revenues are derived from the sales of auto-dimming mirrors to nearly every major automaker in the world.