Use Bridgeport’s 419 Malleable Iron Squeeze Connector to join 3-1/2" flexible metal conduit (FMC) to an electrical box or enclosure. This squeeze connector’s malleable iron construction allows for heavy-duty applications while offering superior corrosion and impact abrasion resistance. To install, simply insert the FMC into the squeeze connector and tighten down the flex screws to secure the tubing in place. Then, attach the connector to a 3-1/2" knockout and you’re off to the next part of your installation. Bridgeport’s malleable iron squeeze connectors come in flex trade sizes 3/8" through 4".