Notice is hereby given that we cancel our contract dated for the sale of (description of goods) to (name of firm) , for the following reason.
That on (date) , you breached said contract in the following respect: .
Cancellation of said contract is effected in respect to that certain installment delivered on (date) , and for any subsequent delivery of goods, contracted for in said contract, inasmuch as your breach impairs the
contract as a whole.
(We claim damages from you in the amount of $ )