Sale of Chametz

I authorize Rabbi Yosef Weinstock to sell and to lease by transactions as he deems fit and proper, for such time which he believes necessary , to a non-Jew of his choosing.
Also, I hereby give Rabbi Yosef Weinstock full power and authority to appoint an substitute in his stead with full power to sell and lease as provided.

In the absence of a kinyan in person, it is appropriate to verbalize the first sentence above, indicating your full intention to grant authority for sale of your chametz.