The 3-inch wall thimble is used for many single wall pipe, horizontal vent exhaust applications. This 3-inch wall thimble is a rigid pipe, using Category III Stainless Steel. The 3-inch wall thimble is adjustable from 4" to 7" and has dimensions of 8" x 8".
Material: Category III stainless steel
Size: 3-inch diameter, adjustable from 4" to 7" wall thickness
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Z-Flex Z-Vent Adjustable Wall Thimble, 4-7" for 5" Single & 3" Double Wall Vent Pipes
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