Think of our outdoor firebox as the canvas that lets you create your ideal fireplace. Built using the same rugged construction as our fireplaces, the outdoor firebox is a ventless design that’s certified for use with an outdoor burner. The optional stainless steel drain pan is available to help control and re-direct any moisture that collects beneath the fireplace. Protect your fireplace with the available weather doors. To be used with Empire Harmony gas logs and Empire Loft burner kits. The bi-fold glass doors are not to be used while the fireplace is operating.