18 Round Duct

We have the 18 round duct you need to get the job done right.

Shop 18 Round Duct results

(Showing 1 - 15)

Mfr # GRLABQS18GA

Key Features:

  • Duct Fitting Duct Size: 18"
  • Width: 18 in
  • For Use With: Round Duct, Light Gauge Tubing or Hoses
Mfr # GRPFRO3VGA50

Key Features:

  • Width: 6 1/2 in
  • Gauge: 26 ga
  • Length: 50 ft.
Mfr # GRDM4703GA

Key Features:

  • Item: Duct Hangers
  • Type: Round
  • Material: Steel
Mfr # GRAIRBRACE36GA

Key Features:

  • Type: Galvanized
  • For Use With: Condenser units, heat pumps and equipment
  • Package Quantity: 1
Mfr # GRAIRBRACE45GA

Key Features:

  • Type: 45 in
  • For Use With: Condenser units, heat pumps and equipment
  • Package Quantity: 1
Mfr # GR 440 3/16X5/8

Key Features:

  • Item: Gasket Tape
  • Material: Butyl/Proprietary Co-Polymers
  • Application: Adhesive, Gaskets, Sealant
Mfr # GRPROSEAL1

Key Features:

  • Item: Low VOC Duct Sealant
  • Adhesive Grouping: Sealant
  • Color: Gray
Mfr # 5852

Key Features:

  • Item: Grease Coupler 3-Jaw
  • Type: Hydraulic
  • Fitting End (In.): 1/8 FNPT
Mfr # 412H

Key Features:

  • Flexible Duct Inside Dia.: 7"
  • Material: Steel
  • Item: Transition Duct
Mfr # GRDRI849GA

Key Features:

  • Item: Duct Access Door
  • Shape: Rectangular
  • Includes: Self-Adhesive Template
Mfr # GRQS6GA

Key Features:

  • Duct Fitting Duct Size: 6"
  • Width: 6 in
  • For Use With: Round Exhaust HVAC Metal And Flex Duct
Mfr # GRMD75GAK

Key Features:

  • Width: 3 1/2 in
  • Gauge: 12
  • Height: 2 in
Mfr # GRFIBERSEAL1

Key Features:

  • Item: Duct Sealant
  • Adhesive Grouping: Sealant
  • Color: Gray
Mfr # GRDRI161228GA

Key Features:

  • Item: Duct Access Door
  • Shape: Rectangular
  • Includes: Self-Adhesive Template
Mfr # GRDM2723SI

Key Features:

  • Height: 5 7/8 in
  • Deflection Range: 0 in to 0.50 in
  • Width: 1 13/16 in