Z-Flex 3" to 24" Double-Wall Thimble, Stainless Steel AdjustableUse with double-wall pipe going through a combustible wall. Features:• Width can be adjusted DownloadsZ-Vent SVE Series IV Installation and Maintenance Instructions, 3" to 24", Single & Double Wall Z-Vent Dimensional Specifications Frequently Asked Question ("FAQ")Q: Can this be used on a ceiling? |