What is the difference between a vented gas product and a vent-free gas product?

Vented gas products require a fully functional wood burning fireplace and must be burned with the damper open or be vented to the outside of your home.

Vent-Free (also called Unvented or Ventless) gas products can be installed in either a wood burning fireplace, or a ventless fireplace that is rated for aftermarket ventless logs and are burned with the damper closed.