The 1390 series barrier bars feature a grid of bar work that has a maximum of 6” on center spacing. The 1390 is a great choice where penetration through a wall or ceiling needs to be secure and no requirement for duct work to be attached.
- Security Barred Duct Work
- Vertical or Horizontal Round Bar (3/4” Diameter) and Flat Bar (2 1/2”x1/4”)
- Frame Size is 2 1/2”x1/4”
- Standard Finish is Mill