Roof and Non-Combustible Walls Thimbles
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Wall Thimbles
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Insulated thimbles are designed per NFPA Standard 37 and 110. Standard thimbles are 24 inches long and are designed for thick walls. Thimbles are shipped with one plate shipped loose. Exterior wall plate welded. Thimble rain guard available separately. See Thimble user guide for additional instructions.