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Featuring THERMO-PAN® , a high quality, sheet metal alternative for constructing return air ducts between joists and stud cavities. Consists of corrugated insulation faced with aluminum. Significantly reduces duct noises and labor.

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Thermo-Thimble Through-The-Wall Line Set Kit

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Thermo-Levelers Thermo-Thimble Through-The-Wall Line Set Kit

SKUMODEL #DescriptionSizePCS/BOXQuantityAdd to Cart
68344644002Thimble Kit (Round)2-7/8" dia. – up to 12" wall40
68344844005Thimble Kit (Round)4-7/8" dia. – up to 12" wall16
68343644008Thimble Kit (Rectangular)2-1/4" × 3-1/8" – up to 8" wall20