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Duct Reducers & Increasers

RectorSeal
|
sku: 331506354

Rectorseal 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 -4degree f To 140degree F. Complements any residential or commercial building...

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Master Flow
|
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
|
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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RectorSeal

sku: 331506354

Rectorseal Rectorseal Slimduct 3.75" Flex Adaptor, White 100

Master Flow

sku: 3570321

Master Flow 4 in. to 3 in. 26-Gauge Round Reducer

Everbilt

sku: 3571128

Everbilt 3 in. to 4 in. Plastic Duct to Duct Increaser

RectorSeal

sku: 331506354

Rectorseal Rectorseal Slimduct 3.75" Flex Adaptor, White 100

Master Flow

sku: 3570321

Master Flow 4 in. to 3 in. 26-Gauge Round Reducer

Everbilt

sku: 3571128

Everbilt 3 in. to 4 in. Plastic Duct to Duct Increaser