FERRULE 4 INCH RHEIA (M75)
SKU
S1-20-01-010
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Rheia 4" Ferrule (M75) - The 4" ferrule twists into the end of a 4" diameter duct, using a patent-pending threaded system. This technology ensures a near air-tight seal to the duct. UL 181C and UL2043 certified.