Features -85% steady state maximum efficiency and up to 24,000 BTU's -Heater and wall furnace rated -No electricity required to light or operate - millivolt system ensures reliable use even during power failures. -50% flame/heat adjustment for maximum comfort and efficiency -Clear, unobstructed viewing area through a 400 square inch heat resistant ceramic glass (16" x 28 1/2") -Concealed controls which you can turn on and off at the flick of a switch -Available in clean burning, convenient natural gas or propane -Equipped with 100% safety shut off feature for your peace of mind -Realistic, ceramic fiber, light-weight molded PHAZER® logs for a natural wood burning look -YELLOW DANCING FLAME® burner system -Standard blower increases heating efficiency -President's Limited Lifetime Warranty