A frame used to support duct or various utilities on flat roofs. Unique design allows a sturdy support without penetrating or causing damage to the roof membrane. The 6-DSA model is manufactured with 12 gauge 1-5/8″ x 1-5/8″ slotted strut for maximum adjustability in length and height. The duct or “H” type adjustable support base is made of hot-dip galvanized strut and hardware with polycarbonate plastic bases.

 Base Material: 



The deck base is 9″ x 15-1/4″ and has a maximum recommended adjustable height of 24″ and a maximum adjustable width of 22″.

 Max Duct Size: 

Recommended duct size not to exceed 24″ wide

 Max Duct Clearance: 

Adjustable height from 10″ to 24″.

 Max Load Weight: 

6-DSA Load Table
Span (in) Max Uniform Distributed Load (lbs/ft) Max Concentrated Load at Center (lbs)
16 200 267
18 178 267
20 160 267
22 145 267


Manufacturer’s recommended spacing is not to exceed 8 foot centers depending upon the load. Make certain each duct stand is properly elevated to even load weight at all duct stands.