This interlock kit fits Square D panels with approx 170 mm spacing from the bottom of the generator breaker knockout to the top of the main breaker panel knockout. The main breaker is vertical throw and the main breaker's area on the panel is raised approx 16 mm from the height of the branch breaker area.
 
The kit is CNC machined from solid aluminum billet and includes all hardware, thread lock compound, a correct size drill bit, a full warning label decal set and clear installation instructions.
 
All of our generator  interlock kits are proudly made in the USA!