Model SDVLXL Generator Interlock Kit fits Square D panels having a single, centered vertical-throw main breaker and approximately 4" from the bottom edge of the main breaker panel cover knockout edge to the top of the generator breaker panel cover knockout edge as shown.
 
The generator breaker MUST occupy the top two positions in the RIGHT breaker column.
 
This kit is not yet a full production run kit, so it is not our signature blue anodized color. It is precision CNC machined from solid aluminum billet however, and looks very professional and fits very well. The kit includes everything necessary to complete the installation including all hardware, the correct size drill bit, name brand thread lock compound, a full warning placard set, and clear installation instructions.
 
All of our interlock kits are proudly made in the USA!