Powder-coated and proven MIG welded steel construction with catch pin to keep the bracket from vibrating open. The catch pin is secured to the bracket with a black rubber tether. Pin must be pulled prior to extinguisher removal. 
 
VB9 is for large diameter cylinders up to 8” Bracket is 17 1⁄2” Tall 8 1⁄4” Wide & 8”
deep with an extra brace to support tall cylinders plus heavier 1⁄2” adjustment rod.