12" Clay Thimble 6" X 12" Catalog Chimney Items Clay Chimney 12" Clay Thimble 6" X 12" SKU : 612CT Description Concrete Chimney Block | NYS Tek Spec 3.5 | Heat Stop Refractory Appx. Inside Dimension: 6 1/4" Appx. Outside Dimension: 7 1/2" Size: 6" x 12" Spec Sheet Rates Please contact us for current pricing and availability. Request Availability
