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Galvanised steel duct strap hanger, rectangular bracket with centre hole, 50 in duct size, 660 lb capacity

Ductmate

Ductmate GRDM4703GA Duct Strap Hanger 50 in 660 lb Steel

SKU CH-ZMQX-P7RG5

Steel duct strap hanger supports 50 in diameter ducts at 660 lb capacity

  • MaterialHAWA
  • Supports 50 in duct with 660 lb capacity
  • Steel construction meets SMACNA standards
  • 14 ga thickness for durable installation
  • Compatible with 1 in strapping size
  • Compact 2 1/2 in length fits tight spaces

Duct Strap Hanger for 50 in Diameter

The Ductmate GRDM4703GA is a steel duct strap hanger designed to support round ductwork with a nominal diameter of 50 inches. It is intended for HVAC installers and maintenance crews who need a code-compliant hanging solution for large-diameter ducts in commercial or industrial settings. The hanger meets SMACNA standards and carries a 660 lb load capacity. It is not suited for smaller duct sizes or non-round profiles.

Install with 1 in strapping at 14 ga thickness

Installation requires compatible 1 inch wide strapping and the hanger body is 14 gauge steel. The inside diameter accepts a 1/2 inch rod or bolt and the overall height is 5/8 inch. A common issue is using undersized strapping or exceeding the 660 lb rating which can cause deformation. Ensure the supporting structure can handle the imposed load before mounting.

660 lb load capacity at 50 in duct diameter

The decisive specification is the 660 lb load capacity combined with the 50 inch nominal duct diameter. This pairing determines whether the hanger can safely support the specific duct section in your system. Verify the actual duct weight including insulation and contents against this rating before purchase.

Highlights

  • Supports 50 in duct with 660 lb capacity
  • Steel construction meets SMACNA standards
  • 14 ga thickness for durable installation
  • Compatible with 1 in strapping size
  • Compact 2 1/2 in length fits tight spaces

Specifications

MaterialHAWA
BrandDUCTMATE

Questions about this item

How can I confirm the duct strap hanger is holding the 660 lb load after installation?

Verify the steel strap sits fully inside the 1/2 in. diameter opening and the hanger's 5/8 in. height rests flush against the duct; any gap or bending indicates the 14 ga. material is overstressed.

What comes with the GRDM4703GA and what must I supply separately?

The box contains only the steel duct strap hanger; you must provide 1 in. wide strapping, fasteners and any mounting hardware required for your ductwork.

Which capacity version should I choose for a 50 in. diameter round duct?

Select the 660 lb model — it is rated for 50 in. nominal duct diameter and meets SMACNA standards for that size.

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