Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [Compatible Models] The generator interlock kit is compatible for 150 or 200 Amp panels. Spacing between main and branch breakers is 1 1/4 inches. You need to confirm whether the model and spacing are correct before purchasing. [Application Scenario] When unexpected power outage causes inconvenience, our kit provides a simple and safe solution. An interlock kit prevents both mains and generator power, and is used to safely route generator power to any circuit in your home while ensuring you can safely use all your . We specialize in generator interlock kits. We manufacture high-quality products that provide safety and your family. Electricity safety is no small matter. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Colour:Silver Material:Aluminum alloy Package Contents: 1 * Generator Interlock Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.