Use this Miller Edge JB-02 junction box from North Shore Commercial Door for commercial overhead doors that use coil cords or retracting reels. IT's a metal junction box with cover that comes with a strain relief, 90-degree connector and wire nuts. The box has 11 knockouts for greater versatility. This box will fit on a single-angle bottom bar of a rolling steel door. It's also compatible with sectional door.
Standard metal junction box w cover
Includes 1 90-degree connector, 1 straight connector
Includes strain relief + 2 wire nuts + pop-out holes
For single-angle bottom bar of rolling steel door
Also compatible with sectional door
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