GenInterlock AC-SD200A-NK, Generator Interlock Kit, 150 And 200 AmpCondition:* New Surplus Stock, In OEM Packaging. As Pictured.Additional Notes:* Generator Breaker Interlock for Square D, QO or Homeline Indoor or Outdoor, With Main 150 or 200 Amp Panels* 1-3/8″ Spacing Between Main and Branch Breakers* Met Lab Listed E113887* Kit includes Interlock, labeling, drill bit and generator breaker retainer strapGenInterlockAC-SD200A-NK