Check the listing for details. Cutler Hammer Generator interlock Vertical Throw 200 Amp CH Listed EAT-CH200V. Condition: New. Listed at 69.95 USD. Cutler Hammer Generator Interlock clip This model fits 150 and 200 amp older CH style panels with vertical operated style main breaker the space between the bottom of the main breaker to the top breaker on the right is 2 1/4 inchesThis is an APPROVED interlock tested by MET LabsMet Lab Listing E113887Ask your inspector how important to have a properly listed itemBEWARE of Sellers on here selling NON listed productsThey will NOT pass inspectionsMADE IN THE USAThis panel was either grey or tan in color depending on the age of itPlease check the pictures to make sure it matches your panelKit Includes: Instructions, Labeling, Drill bit, Interlock Clip, and holding strapPlease follow all National Electric Codes when installing this interlock Breakers and panelbox not included