This kit contains 12 x M12 (1/2") bolts (with full length thread), and 24 x M12 nut and washer assemblies (12mm). The bolts are useful for mounting ducts or extending iron-work within a building. Their prime use is for mounting 100, 220 and 300mm ducts off existing brackets. The short bolt length means that the ducts are mounted directly over existing, horizontal brackets.
|Duct Size||100x100mm, 220x100mm, 300x100mm|