Flextral ducting is Phthalate Free!  This is critical in HVAC ducting as not to pollute clean air.  Clean air without contamination from harmful plastic additives is imperative when circulated in confined spaces.  Phthalates are a group of chemicals used to make plastic softer and more flexible.  While this is good, they also contain known carcinogens linked to causing cancer, tumors, and other health complications.  Not only can this be illegal in some applications and industries it can pose a major health risk. Attention to phthalate free products is growing year over year.  Flextral ducting is ahead of the curve to keep you safe!