Flexible Duct Support

The Malco FDS1 Flexible Duct Support eliminates air flow restrictions and increases efficiency to dramatically reduce utility bills and improve heated or air-conditioned room comfort. A properly supported 90° duct elbow typically improves air flow efficiency 10 to 40%. A Malco Duct Support quickly installs on new or existing flexible duct. The versatile FDS1 design uses either 36 or 48 inch nylon cable/zip ties to accommodate 4 inch to 16 inch diameters of flexible fiberglass wool duct as well as un-insulated flexible duct. And the strong, but lightweight, 100% recycled polymer support will not weigh down ducting.


  • Supports 90° elbow for flexible duct.
  • Quickly installs on 4-16 inch duct diameters.
  • Lightweight 100% recycled polymer construction.
  • Uses 36 and 48 inch nylon ties (Malco TY34 and TY48).


Catalog #DescriptionNet Wt.Duct DiameterTie Requirements
FDS1Flexible Duct Support3 oz. (85 g)----
4-10 in. (10.2-25.4 cm)2) 36 in. (91.4 cm)
12-14 in. (30.5-35.6 cm)2) 48 in. (121.9 cm)
16 in. (40.6 cm)4) 36 in. (91.4 cm)



My Review for Flexible Duct Support

  • This field is for validation purposes and should be left unchanged.


Thomas Robicheaux

Works just like it should.
I bought these with my own money since I could not get any free for testing. With my anemometer it is showing a 10-15% improvement in some of the vents of my home.