![Ductwork Limited Warranty](https://documents.gaf.com/warranties/ductwork_limitedwarranty.jpg)
Ductwork Limited Warranty
Warranties
![Ductwork Limited Warranty](https://documents.gaf.com/warranties/ductwork_limitedwarranty.jpg)
Rails were developed for ease of installation. They are an easy way to attach flanged register boxes to joists or other nailing surfaces. A pack of 6 rails can install 3 register boxes.
Warranties
Brochures and Literature