The Regency Cascades i1500 small hybrid wood burning fireplace insert, featuring Eco-Boost triple burn technology, is perfect for sealing a drafty fireplace that isn’t quite big enough for a standard sized insert or where a more compact style heater is required. This catalytic insert offers an increase in efficiency, burn-times, and most importantly dramatically reduces emissions to an astonishing 1.0 gram/hour. The Regency Cascades i1500 is backed by the industry’s best warranty on both the stove and catalytic combustor.