This product is beautifully hand finished, has the highest quality construction and hottest quality construction. Its design is certified by the American Gas Association. Equiped with an Oxygen Depletion System, the pilot shuts off gas if oxygen approaches an unsafe level. Millivolt models (please see our showroom) have thermostatic, remote, timer and wall switch controls. Hargrove's vent free gas fire logs are designed to burn in an existing wood burning fireplace with the damper closed or an approved vent free fire box. No electric hook-up is required! The realistic log sets are available in classic oak, western pine and birch in 18", 24", and 30" sets, birch in 18" and 24" sets. Burner systems come fully assembled and pretested.