Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp Panels.1 3/8 inches Spacing Between Main and Generator Breaker.Professional and Interlock Kit: Amazon.com: Tools & Home Improvement
Square D Homeline 150 - 225 Amp Outdoor Load Center Generator Interlock Kit HOMRBGK2C - The Home Depot
Amazon.com: Natupal Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp panels. 1 3/8 inches Spacing between main and generator breaker, Professional and Interlock Kit : Tools & Home Improvement
Square D 1-in Generator Interlock Kit in the Breaker Box Parts department at Lowes.com
Interlock Kit K-5010 | Interlock Kit
Complete Interlock Kit for 2 Doors
Generator Interlock Kit legal in SC ? : r/AskElectricians
Generator Interlock Kit Compatible with SD200A 150 or 200 Amp Panels - Walmart.com