Broan-NuTone RMN3604 36 Inch Rangemaster Soffit Chimney, Stainless Steel Since their beginning in 1932, Broan has pioneered many of the product innovations now established as standards of the industry. Today, Broan carries on the commitment to provide the finest products in the industry. Optional matching soffit chimney on the 60000 extends the commercial look in kitchens with ceilings up to 8 feet high.