Professional Interlock Kit With 3/4 Inch Spacing Between The Main And Branch Product Features ?Compatible Models?Generator Interlock Kit Compatible with Square D QO Homeline Indoor or Outdoor 100 or 125 amp Panels ?Interval Space Required?3/4 Inch Spacing between main and generator breaker. ?Safety Generator Interlock kit?This kit avoids the inconveniences that an unexpected power outage can cause. It is used to direct generator power to any circuit within your home safely. It is truly a great way to safely connect up a generator while assuring that you have access to all of your home electrical appliances. ?Package Contents?Our Generator Interlock kit include 1 Interlock plate, 3 Shoulder Screws, 3 Hex Nuts, 1 Generator Start-Up Procedure Label, 5 Remind Label, 2 Zip Ties, 1 Instruction Bulletin, 1 Drill Bit ?Easy to Install?The generator interlock kit offers a 3/16 drill bit, sturdy steel that goes through breaker panel easily. Easy to install, no need extra control box or wiring. Simply contact us back if our product ever fails you and we'll mail you a new original replacement. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!