Instant Interlock Phone: (800) 957-0036 Fax: (800) 750-6495 Instant Interlock on Facebook Your name * Your email * Subject * Message * CAPTCHAThis question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Math question * 3 + 3 = Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.