First, be sure your control is one that we rebuild. You can view our rebuilt models on our website or call 800-356-3774 and we will be glad to assist you. Second, box up your controls and send to: EPRI 1758 Travers Wharf Rd Bldg B Cambridge MD 21613 Wrap them in newspaper, bubble wrap or something that will prevent further damage. Third, enclose a purchase order or similar information to help us receive your order and apply it to your facility. A packing list and your business card will work.