6-DS | Base: Polycarbonate, SS and HDG

*The Duct Support series is a custom product.

To obtain pricing for the 6-DS supports, please fill out the following template with the required information listed below:

Visit the Quote Template page to download 6-DS Quote Template (PDF)

1. Dimensions of duct
2. Duct material (gauge thickness)
3. Clearance height above roof
4. Total footage of duct
5. Insulation (If any)
6. Does duct need to be enclosed?


  1. Spec & Drawing Sheets (PDF)
  2. Spec & Data Sheets (PDF)
  3. Download (DWG)
Stainless Steel and Hot Dip Galvanized
  1. Spec & Drawing Sheets (PDF)
  2. Spec & Data Sheets (PDF)
  3. Download (DWG)
SKU: 6-DS Category:


A frame constructed of strut and MIRO’s patented bases are used to support duct on flat roofs. Unique design allows a sturdy support without penetrating or causing damage to the roof membrane. Ducts rest on a 1 5/8″ x 13/16″ strut and are adjustable in height. The duct support base is made of polycarbonate, Stainless Steel and Hot Dip Galvanized steel and all other metal parts are made of hot-dip galvanized steel.

Base Material: Polycarbonate, Stainless Steel and Hot Dip Galvanized
Size: Base is 9″ x 15.25″, has a bar width which allows at least 14″ between the strut assembly. Can adjust in height to support duct from a low of 12″ to a desired height.
Max Pipe Size:
Max Pipe Clearance:
Max Load Weight: The 6-DS series support is engineered to ensure member/component capacities and deflection criteria are not exceeded. Maximum loading from any MIRO base to the finished roof surface is not to exceed 2.0 psi unless specifically allowed otherwise in the project specifications. Deflection in the horizontal header bar is not to exceed the span length divided by 360 or 1/8”.
Spacing: Manufacturer’s recommended spacing is not to exceed 8 foot centers depending upon the load. Do not exceed load weight.