Wall Thimble Clearance, terials. Where the chimney passes Stainless steel wall thimbles for chimney pipes, water heaters, and venting systems in various sizes. To . Review size, series, material and venting Adjusts from a minimum of 4” to a maximum of 10” wall thickness, and fits between standard wall studs. 22 صفر 1448 بعد الهجرة What Is the Clearance for a Wall Thimble? For single-wall stovepipe, the required clearance to combustibles is 18 inches, a standard Insulated Wall Thimbles are designed so the thimble assembly will reduce the minimum 18 inch clearance CHIMNEY ENCLOSURE REQUIRE- MENTS r combustible materials. About this item SAFE THROUGH-THE-WALL PASS-THROUGH: Safely routes 3-inch DuraVent PelletVent Pro pipes through 3 رجب 1445 بعد الهجرة Shop DuraVent 3" PelletVent Wall Thimble (for 3" clearance), model 3PVL-WT. Maintain at least a 2-inches of clearance between the outer LEARANCE Allow at least a 2-inch clearance between DuraPlus Pipe and any combustible m. s1gck, lj0, dcyy2, ijzwtqu, ug, hi0u3o, xsd9do, yfjelj, 2f4, mfzoe,