Description
BDM Dalsin Line 12" 24 Gauge Stainless Steel Storm Collar w50.25 Clearances: 0" clearance to masonry 1200W WM6 NG DMI G9T F5P NB Clearances: 0" clearance to masonry for gas Diameter 9 Model 660012 Clearance Zero Zero clearance when installed into a masonry chimney and wrapped with a 1 2" ceramic fiber insulation blanket "Dalsin Line" rigid stainless steel liner and fittings are offered in both type 304 and type 316L stainless steel