*The Duct Support series is a custom product.
To obtain pricing for the 8-DS supports, please fill out the following template with the required information listed below:

Visit the Quote Template page to download 8-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. Drawings (DWG)
8-DS Enclosed
  1. Spec & Drawing Sheets (PDF)
  2. Drawings (DWG)
  1. Spec & Drawing Sheets (PDF)
  2. Drawings (DWG)
8-DS 3SB
  1. Spec & Drawing Sheets (PDF)
  2. Drawings (DWG)
SKU: 8-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 1 5/8″ strut and are adjustable in height. The duct support base is made of Polycarbonate, stainless steel and hot-dip galvanized steel. All other metal parts are made of hot-dip galvanized steel.

Base Material:

Polycarbonate, Stainless Steel and Hot Dip Galvanized



Bases are 16″ x 18″, the support has a bar width which allows at least 18″ between the strut assembly, and can adjust in height. 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 8-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”.



Manufacturer’s recommended spacing is not to exceed 8 foot centers depending upon the load. Do not exceed load weight.