Follow the steps to effectively fill out the form online.

1. Click the ‘Get Form’ button to obtain the form and access it in your preferred editing tool.
2. Enter the project title in the designated field at the top of the form. Ensure that all relevant details are accurate.
3. Fill in the substitution request number along with the information from the original specifications. This includes the 'From' and 'To' fields indicating the current and proposed products.
4. In the 'Description' section, provide detailed information about the substitution, including the specification title and section numbers.
5. Document the proposed substitution, including the manufacturer, address, phone number, trade name, installer, and model number.
6. Indicate the age of the proposed substitution product using the history checkboxes provided.
7. Describe the differences between the proposed substitution and the specified product. Remember to attach comparative data as required.
8. Provide the reason for not supplying the original specified item, ensuring to explain any relevant context.
9. If applicable, note any other projects where similar installations have been conducted, including details such as project name, architect, and installation date.
10. Specify any potential impacts the proposed substitution may have on other parts of the work and indicate if savings for the owner are applicable.
11. Complete the certification statement, affirming that all provided information is accurate and clear. Include your name, firm, address, and contact number.
12. If required, submit any supporting documents like drawings, product data, or test reports in the attachments section.
13. Upon final review of the filled form, you can save your changes, download the document, and print or share it as needed.

Start completing your CSI Form 13-1A online today!