I, the undersigned, am owner/authorized representative/tenant of the premises at which the work is being done. I hereby authorize Armor Air to perform the recommendations, and to use such labor and materials as you deem advisable. Unless prior authorization for billing, payment for all work done is due upon completion (C.O.D.) I agree to pay reasonable attorney’s fees, court costs and collection fees in the event of legal action. All old parts will be removed from premises and discarded, unless otherwise specified herein. This invoice is agreed and acknowledged. A service fee will be charged for any returned checks, and a financing charge of 1% per month shall be applied for overdue amounts. You, the buyer, may cancel this transaction at any time prior to midnight of the third business day after the date of this transaction.