Sheet Metal & Air Conditioning Contractors’ National Association


About SMACNA Secure PDF Files

  • SMACNA technical manuals purchased in PDF/CD formats are password protected and secured using FileOpen.

  • Secure publications cannot be transferred to other computers, including company networks.

  • You are limited to printing only one copy of the manual.

  • If you try to open a PDF/CD version of the manual on a different computer, you will not be successful.

  • Adobe Acrobat/Reader is required to view SMACNA Manuals.


  •  Once your purchase is complete, you will receive an email with your password and download instructions

  • If you do not receive your password, please contact SMACNA directly at or call 703-803-2980.

How to Open SMACNA Secure PDF Files

Install the FileOpen Plugin

  •  Download and install the plugin on your PC or Mac at 

  • Click OK to download the FileOpen Plugin installer and follow the prompts.

Enter your Username and Password

  • Enter your username and password from your purchase confirmation email*. These will be listed underneath each book title in the email confirmation.

  • When you open for the first time, after installing the FileOpen plugin, a popup window will appear in Adobe Reader or Acrobat.  Enter the username and password from your purchase confirmation email.

Note: Your username and password is not the same as your log in to the website. Please follow the instructions above. 

If you have trouble with the plugin or locating your username and password, please contact SMACNA at or call 703-803-2980.

View the Publication

You can now view SMACNA protected PDF files. Be aware that your use of files may be restricted depending on the security controls that have been applied to the document.