Won't this hurt cfm's?

I used this for my smoker shed, so not sure about the cfm's

How does this effect the rated CFM?

CFM is a measure of volume over time. Any time the output is restricted (say 6" down to 4") you can expect a back pressure and a REDUCTION in CFM, even if there is an increase in velocity (speed) of the airflow. Opening back up this restriction (4" up to 6") will not necessarily increase your CFM, it just decreases the velocity of the airflow and is less restrictive. It is not possible to increase CFM in this manner, without the introduction of another fan beyond the initial restriction.

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Duct Reducer Adapter 6" to 4", Galvanized Steel HVAC Connector | Galvanized Steel Reducer Increaser for Inline Fans, Bathroom Exhaust, Range Hoods, Dust Collectors, Grow Tents & Ductwork

Product ID: 185719628

Details

Brand
AC Infinity
Color
Black
Connector Type
Reducer
Exterior Finish
Zinc
Item Weight
0.34 kg
Manufacturer
AC Infinity

📏6" to 4" precise fit

🔥High-temp zinc coating finish

🛡️Galvanized steel corrosion-resistant

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Description

🔧 Upgrade your airflow game with precision and durability!

SECURE GRIP DESIGN - Raised lips ensure a firm, slip-free connection to ducting and equipment.
COMPACT STREAMLINED - 5.11-inch length fits discreetly without compromising airflow.
SEAMLESS AIRFLOW CONNECTION - Optimizes ventilation efficiency by perfectly adapting different duct sizes.
VERSATILE HVAC COMPATIBILITY - Ideal for bathroom fans, dust collectors, range hoods, grow tents, and more.
DURABLE GALVANIZED STEEL BUILD - Engineered to resist corrosion and withstand high temperatures for long-lasting performance.

The AC Infinity Duct Reducer Adapter efficiently connects 6-inch to 4-inch duct openings, crafted from corrosion-resistant galvanized steel with a zinc coating to endure high temperatures. Its raised lip design ensures a secure fit, making it perfect for enhancing airflow in bathroom fans, dust collectors, and various HVAC applications.

Specifications

ASIN	B0842XMBYC
Best Sellers Rank	#37,136 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #52 in HVAC Ducting
Brand Name	AC Infinity
Color	Black
Connector Type	Reducer
Customer Reviews	4.5 4.5 out of 5 stars (1,296)
Exterior Finish	Zinc
Item Highlight	Galvanized Steel Reducer Increaser for Inline Fans, Bathroom Exhaust, Range Hoods, Dust Collectors, Grow Tents & Ductwork
Item Weight	0.34 kg
Manufacturer	AC Infinity
Manufacturer Part Number	AC-SDR64
Material Type	Galvanized Steel
Model Number	AC-SDR64
Number of Packs	1
Number of Pieces	1
Size	6" to 4"
UPC	819137021334
Unit Count	1 Count

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MX$1446

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In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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