https://www.mccoys.com/shop/p/4597100-052303-18/wiremold-b81-raceway-box-connector-metal
B81 Raceway Box Connector, Metal
Sku: 4597100-052303-18
$5.83 / Card
16 Available at
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For connecting raceway to conduit boxes with 1/2 in knockout.
Material
Metal
Specifications
1/2 in Knockout