This insert’s flush design takes the wood insert category to a whole new level. Clean lines surround an expansive linear firebox to provide you with a designer look around an impressive fire. The Regency Pro-Series Ci2700 large hybrid wood burning fireplace insert is one of the original Regency inserts that feature Eco-Boost triple burn technology. When the included digital thermometer reaches the right temperature, use the bypass control to engage the catalyst; and watch your fire burn longer and more consistent, while still being environmentally friendly. Delivering up to 14 hours of heat with a single load of wood; fuel is used to its full potential with only 1.3 g/hr. of emissions and 79% efficiency!