FMI 12-8DM Insulated Chimney Pipe, 12", 2 Wall HELLOFALL10 These heaters are made between

These heaters are made between  2003 & 2008 only

Has no objectionable odor

Better positioned air hose

Refills are color coded for ease of identification

2 cartridge fuse

FMI 12-8DM Insulated Chimney Pipe, 12", 2 Wall HELLOFALL10 These heaters are made betweenHighlights: Length: 12" Double Wall Flue Section Finish: Galvanized Material: Steel Inner and outer pipe The outer pipe, made of galvanized steel, provides cooling air necessary to maintain safe chimney temperatures, while the inner pipe, made of stainless steel, emits gases out of the fireplace Snap lock design 12" standard pipe (12" inner diameter, 15 3 8" outer diameter) UL127 Listed 1700 Degree Pipe