1-1/4 Inch Erickson Coupling, Malleable Iron with Steel and Malleable Iron Ring for Use with Rigid/IMC Conduit 678 1 1/4IN ERICKSON COUPLING
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https://static.graybarcanada.com/Generic/11316_eash70gw5iz4c9u1.pdf
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Spec Sheet
https://static.graybarcanada.com/Generic/11316_eash70gw5iz4c9u1.pdf