Mark Tyrol

The fireplace plug seals the fireplace between uses to save energy and improve comfort of the home.

Credit: Mark D. Tyrol
Copyright: 2006 Battic Door Energy Conservation

Published by Mark Tyrol

Mark D. Tyrol is a Professional Engineer specializing in cause and origin of construction defects. He developed several residential energy conservation products including an attic stair cover and a fireplace...  View profile

To comment, please sign in to your Yahoo! account, or sign up for a new account.