HVAC - Ducting & Venting - Duct Fittings - Duct Reducers & Increasers

RectorSeal
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sku: 331506354

Rectorseal Rectorseal Slimduct 3.75" Flex Adaptor, White 100

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Master Flow
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sku: 3570314

Master Flow 6 In. To 5 In. Round Reducer

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Master Flow
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sku: 3570311

Master Flow 4 In. To 3 In. Round Reducer

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Master Flow
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sku: 3570312

Master Flow 5 In. To 4 In. Round Reducer

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Master Flow
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sku: 3570313

Master Flow 6 In. To 4 In. Round Reducer

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Master Flow
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sku: 3570317

Master Flow 8 In. To 6 In. Round Reducer

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Master Flow
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sku: 3570319

Master Flow 10 In. To 8 In. Round Reducer

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Master Flow
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sku: 3570320

Master Flow 12 In. To 10 In. Round Reducer

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Master Flow
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sku: 3570321

Master Flow 4 In. To 3 In. 26-Gauge Round Reducer

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Everbilt
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sku: 3571128

Everbilt 3 In. To 4 In. Plastic Duct To Duct Increaser

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RectorSeal
|
sku: 331506354

Rectorseal Rectorseal Slimduct 3.75" Flex Adaptor, White 100

Rectorseal Slimduct 3.75" Flex Adaptor, White 100|Flex Adapters connect the Flexible Elbow to the 3.75" (100mm) Duct.|Weather resistant PVC, UV stabilized & fire resistant. Tested to over 2,000 hours. Temperature range -4°F to 140° F|Complements any...

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Master Flow
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sku: 3570314

Master Flow 6 In. To 5 In. Round Reducer

The Master Flow 6 in. x 5 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 6 in. pipe to a 5 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570311

Master Flow 4 In. To 3 In. Round Reducer

The Master Flow 4 in. x 3 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 4 in. pipe to a 3 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570312

Master Flow 5 In. To 4 In. Round Reducer

The Master Flow 5 in. x 4 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 5 in. pipe to a 4 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570313

Master Flow 6 In. To 4 In. Round Reducer

The Master Flow 6 in. x 4 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 6 in. pipe to a 4 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570317

Master Flow 8 In. To 6 In. Round Reducer

The Master Flow 8 in. x 6 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 8 in. pipe to a 6 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570319

Master Flow 10 In. To 8 In. Round Reducer

The Master Flow 10 in. x 8 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 10 in. pipe to a 8 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570320

Master Flow 12 In. To 10 In. Round Reducer

The Master Flow 12 in. x 10 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 12 in. pipe to a 10 in. pipe in an HVAC system. It is suitable for...

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Master Flow
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sku: 3570321

Master Flow 4 In. To 3 In. 26-Gauge Round Reducer

The Master Flow 4 in. x 3 in. Round Reducer is made of 26-Gauge, galvanized steel. It is used to transition from a 4 in. pipe to a 3 in. pipe in an HVAC system. It features hemmed collar edges for strength and a snug fit. This round reducer is suitable...

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Everbilt
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sku: 3571128

Everbilt 3 In. To 4 In. Plastic Duct To Duct Increaser

The Duct to Duct Increaser connects 3 in. to 4 in. ducts together. It is ideal for bathroom fan exhaust applications. Finished in black color. The increaser is designed to be a tight fit to reduce air leaks in the connections. When using the increaser...

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Duct Reducers & Increasers