Rectangular Duct Reducer

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$30.99

4'' Dia. Round To Rectangular Duct Transition Adapter, 3-1/4" X 10" Galvanized Steel For Microwave Vent Kit Ducting Hose, Range Hood, HVAC, Exhaust

Amazon.com

$30.99

4'' Dia. Round To Rectangular Duct Transition Adapter, 3-1/4" X 10" Galvanized Steel For Microwave Vent Kit Ducting Hose, Range Hood, HVAC, Exhaust

Amazon.com

$54.99

Duct Outlet 16" X 10" Duct Reducer, Single Wall Galvanized Metal Fitting HVAC

Amazon.com

Free shipping

$54.99

Duct Outlet 16" X 10" Duct Reducer, Single Wall Galvanized Metal Fitting HVAC

Amazon.com

$57.95

RDP Galvanized Duct Increaser / Reducer - 18 X 12 in.

Roofing Direct

$57.95

RDP Galvanized Duct Increaser / Reducer - 18 X 12 in.

Roofing Direct

$163.93

Range Hood Duct 10 in. X 19 in. X 2 in. Rectangular To Round Transition For Lift Downdraft

Home Depot

Free shipping

$163.93

Range Hood Duct 10 in. X 19 in. X 2 in. Rectangular To Round Transition For Lift Downdraft

Home Depot

$22.99

$25.99

Pasimy 4'' Dia X 3-1/4 X 10'' L Rectangular To Round Duct Galvanized Steel Transition For Connecting Duct Fittings

Amazon.com

11% off

$22.99

$25.99

Pasimy 4'' Dia X 3-1/4 X 10'' L Rectangular To Round Duct Galvanized Steel Transition For Connecting Duct Fittings

Amazon.com

$17.95

Duct Increaser / Reducer - Aluminum - 4X3 Inch

FAMCO MSFT STORE

$17.95

Duct Increaser / Reducer - Aluminum - 4X3 Inch

FAMCO MSFT STORE

$28.95

Duct Increaser / Reducer - Galvanized - 10X3 Inch

FAMCO MSFT STORE

$28.95

Duct Increaser / Reducer - Galvanized - 10X3 Inch

FAMCO MSFT STORE

$80.95

RDP Tapered Duct Reducer - 22 X 20 in.

Roofing Direct

$80.95

RDP Tapered Duct Reducer - 22 X 20 in.

Roofing Direct

$117.49

Made In Usa 6-4" Id Galvanized Duct Reducer 8" Long, 22 Gage 15806-0000-1220 - 03233699

Penn Tool Co

$117.49

Made In Usa 6-4" Id Galvanized Duct Reducer 8" Long, 22 Gage 15806-0000-1220 - 03233699

Penn Tool Co

$77.10

Southwark 17188 Duct Reducer, Trunk, 18 in X 8 To 14 in X 8 In, 26 Gauge THK | Skip The Warehouse

Skip The Warehouse

$77.10

Southwark 17188 Duct Reducer, Trunk, 18 in X 8 To 14 in X 8 In, 26 Gauge THK | Skip The Warehouse

Skip The Warehouse

$31.95

FAMCO Aluminum Duct Increaser / Reducer - IR128A

Roofing Direct

$31.95

FAMCO Aluminum Duct Increaser / Reducer - IR128A

Roofing Direct

$9.83

$12.58

Lukjan 2" X 10" Trunk Duct Reducer (MPN: 49-0210)

PlumbingSupplyandMore.com

21% off

$9.83

$12.58

Lukjan 2" X 10" Trunk Duct Reducer (MPN: 49-0210)

PlumbingSupplyandMore.com

$119.99

Made In Usa 8-6" Id Galvanized Duct Reducer 8" Long, 22 Gage 15808-0000-1220 - 03233707

Penn Tool Co

$119.99

Made In Usa 8-6" Id Galvanized Duct Reducer 8" Long, 22 Gage 15808-0000-1220 - 03233707

Penn Tool Co

$26.95

Southwark 5874 Duct Reducer, 3-PC, Plain, 7 in X 4 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$26.95

Southwark 5874 Duct Reducer, 3-PC, Plain, 7 in X 4 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$182.98

Southwark 172410-SW Duct Reducer, Trunk, 24" X 10" To 20" X 10" | Skip The Warehouse

Skip The Warehouse

$182.98

Southwark 172410-SW Duct Reducer, Trunk, 24" X 10" To 20" X 10" | Skip The Warehouse

Skip The Warehouse

$19.82

Southwark 358 Duct Reducer, Trunk, 8 In, 26 Gauge THK, Silver, ASTM A653 | Skip The Warehouse

Skip The Warehouse

$19.82

Southwark 358 Duct Reducer, Trunk, 8 In, 26 Gauge THK, Silver, ASTM A653 | Skip The Warehouse

Skip The Warehouse

$30.18

Southwark 5884 Duct Reducer, 3-PC, Plain, 8 in X 4 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$30.18

Southwark 5884 Duct Reducer, 3-PC, Plain, 8 in X 4 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$57.81

Southwark 581814-SW Duct Reducer, 3-PC, No Crimp, 18 in X 14 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$57.81

Southwark 581814-SW Duct Reducer, 3-PC, No Crimp, 18 in X 14 In, 28 Gauge THK | Skip The Warehouse

Skip The Warehouse

$138.16

Made In Usa 10-6" Id Galvanized Duct Reducer 10" Long, 20 Gage 15810-0000-1220 - 03233715

Penn Tool Co

$138.16

Made In Usa 10-6" Id Galvanized Duct Reducer 10" Long, 20 Gage 15810-0000-1220 - 03233715

Penn Tool Co

$157.94

Z-FLEX 2SVSR0604 6" To 4" Z-Vent Single Wall Reducer | Supplyhouse.Com

SupplyHouse.com

$157.94

Z-FLEX 2SVSR0604 6" To 4" Z-Vent Single Wall Reducer | Supplyhouse.Com

SupplyHouse.com

$39.95

Tapered Duct Reducer - 14X12 Inch

FAMCO MSFT STORE

$39.95

Tapered Duct Reducer - 14X12 Inch

FAMCO MSFT STORE

$32.27

Southwark 581210-SW Duct Reducer, 3 Pieces, 12 in X 10 In, No Crimp, Silver | Skip The Warehouse

Skip The Warehouse

$32.27

Southwark 581210-SW Duct Reducer, 3 Pieces, 12 in X 10 In, No Crimp, Silver | Skip The Warehouse

Skip The Warehouse

$73.90

Broan 423-BROAN Model 423 10" Round To Rectangular Transition For Range Hoods And Bath Ventilation Fans | Supplyhouse.Com

SupplyHouse.com

$73.90

Broan 423-BROAN Model 423 10" Round To Rectangular Transition For Range Hoods And Bath Ventilation Fans | Supplyhouse.Com

SupplyHouse.com

$21.93

Greenseam Duct Reducer: Steel, For 10 in Dia, 8 in Lg, 10 in Inlet Dia, 6 in Outlet Dia, 26 Ga Material Thick Model: GRR10P6PGA26

Grainger

$21.93

Greenseam Duct Reducer: Steel, For 10 in Dia, 8 in Lg, 10 in Inlet Dia, 6 in Outlet Dia, 26 Ga Material Thick Model: GRR10P6PGA26

Grainger

$74.95

6 To 4 Inch High Airflow Industrial Duct Reducer

Oneida Air Systems Inc.

$74.95

6 To 4 Inch High Airflow Industrial Duct Reducer

Oneida Air Systems Inc.

$56.99

$76.37

Nordfab 8040025922 Reducer,14X22 X 6X22 Duct Size

Suthisa.us

Free shipping

25% off

$56.99

$76.37

Nordfab 8040025922 Reducer,14X22 X 6X22 Duct Size

Suthisa.us

Free shipping

$48.99

$65.65

Nordfab 8040025883 Reducer,9X22 X 6X22 Duct Size

Suthisa.us

Free shipping

25% off

$48.99

$65.65

Nordfab 8040025883 Reducer,9X22 X 6X22 Duct Size

Suthisa.us

Free shipping

$65.53

Southwark 17208188 20X8-18X8 Duct Reducer, Metal, Hvac Duct Fitting. SOUTHWARK METAL. Other Business & Industrial. 17208188.

eBay

Free shipping

$65.53

Southwark 17208188 20X8-18X8 Duct Reducer, Metal, Hvac Duct Fitting. SOUTHWARK METAL. Other Business & Industrial. 17208188.

eBay

Free shipping

$33.47

Rectorseal 86226 5.5"-3.75" Slimduct Reducer (Ivory) | Supplyhouse.Com

SupplyHouse.com

$33.47

Rectorseal 86226 5.5"-3.75" Slimduct Reducer (Ivory) | Supplyhouse.Com

SupplyHouse.com

$8.46

Broan-Nutone 475B 6" To 4" Duct Reducer (Priced Per Each)

PlumbersStock

$8.46

Broan-Nutone 475B 6" To 4" Duct Reducer (Priced Per Each)

PlumbersStock

$16.99

6 To 4 Duct Reducer, Hon&Guan Duct Reducer Increaser 6 To 4 Reducer For 4/6 Inch Ducting HVAC Ventilation System-Black.

Amazon.com

1K+

$16.99

6 To 4 Duct Reducer, Hon&Guan Duct Reducer Increaser 6 To 4 Reducer For 4/6 Inch Ducting HVAC Ventilation System-Black.

Amazon.com

1K+

$387.99

NORDFAB Duct Reducer, Stainless Steel, 20 Ga Thick, 8040026133

Zoro.com

$387.99

NORDFAB Duct Reducer, Stainless Steel, 20 Ga Thick, 8040026133

Zoro.com

$13.58

$15.98

IMPERIAL HVAC Duct Pipe Reducer/ Increaser No Crimp 30 Gauge 6 X 4-In. GV0782-A

DkHardware.com

15% off

$13.58

$15.98

IMPERIAL HVAC Duct Pipe Reducer/ Increaser No Crimp 30 Gauge 6 X 4-In. GV0782-A

DkHardware.com

$13.99

4 To 3 Inch Duct Reducer, Hon&Guan Galvanized Steel Duct Increaser 4 To 3 Duct Reducer For 3/4 Inch Duct, Inline Fan, Grow Tent Ventilation

Amazon.com

$13.99

4 To 3 Inch Duct Reducer, Hon&Guan Galvanized Steel Duct Increaser 4 To 3 Duct Reducer For 3/4 Inch Duct, Inline Fan, Grow Tent Ventilation

Amazon.com

$22.29

IMPERIAL MFG. HVAC Duct Pipe Reducer/ Increaser, No Crimp, 28 Gauge, 7 X 6-In, GV0787

Zoro.com

$22.29

IMPERIAL MFG. HVAC Duct Pipe Reducer/ Increaser, No Crimp, 28 Gauge, 7 X 6-In, GV0787

Zoro.com

$11.04

$12.99

IMPERIAL Short Duct Reducer 6 in L 30 Gauge Galvanized Steel Gray GV0808-A

DkHardware.com

15% off

$11.04

$12.99

IMPERIAL Short Duct Reducer 6 in L 30 Gauge Galvanized Steel Gray GV0808-A

DkHardware.com

Rectangular Ducts and Fittings - MEP Academy

Oct 2, 2020

mepacademy.com

How to Calculate Duct Size? (Round & Rectangular) - aircondlounge

Oct 25, 2021

aircondlounge.com

HVAC Ductwork Design Guide (Layout, Duct Size & CFM) - aircon…

Feb 22, 2022

aircondlounge.com

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25K viewsNov 13, 2020

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