Adams Multipart Contractor Invoice Forms, Three-Part Carbonless, 8.5 x 10.94, 100 Forms Total Streamline billing activities with Adams Multipart Contractor Invoice Forms. Flexible formatting features a large description area to help you leave precise details about each aspect of the job performed. Additional areas accommodate customer information, work location, order number, proposal/bid number, payment instructions and other administrative aspects. Multipart, carbonless design allows you provide a copy to your customer while keeping clean copies for your records. Each form set also features open space at top for your business's logo or name stamp.