Product Details
Bathroom Fan, Forced Exhaust, Forced Intake, In-line / HVAC / Ductwork, Kitchen Fan, Range Hood
$17.95 – $62.95Price range: $17.95 through $62.95
Estimated Arrival: Mon. May 11th - Sat. May 16th.
The FAMCO IR Duct Increaser / Reducer - Galvanized is designed to reduce the duct size of a forced air run in a short transition. by decreasing the duct size, it maintains the CFM in the run and maximizes air flow. The IRA is best used in tighter spaces with low air volume. Quality heavy duty constructed in 26 gauge Galvanized Steel.
The FAMCO IR Duct Increaser / Reducer - Galvanized comes in a range of sizes from 4 inch x 3 inch to 18 inch x 16 inch. The FAMCO IR Duct Increaser / Reducer - Galvanized is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.
Bathroom Fan, Forced Exhaust, Forced Intake, In-line / HVAC / Ductwork, Kitchen Fan, Range Hood
Based on 35 customer reviews.
Customer Images


Bradley Wiley

Total height for all diameters is going to be 3-1/2"
2" height for the larger end, 1" height on the smaller end
answered on February 22, 2021 verified ownerThe increaser/reducers are nominally sized, so both ends would be female. If need be, you could change this by crimping one or both ends of the reducer.
answered on February 18, 2021 verified ownerSorry, no questions were found
SKU GP
SKU NP
SKU WVCA
SKU SC
SKU IRA
Thank you for leaving a review on the Galvanized Duct Increaser/Reducer, Bradley! We appreciate you sharing the image of the product installed.
Just what I needed – a well-made, space-saving duct reducer!
Thank you for leaving a review on the Galvanized Duct Increaser/Reducer, Andrew. We are happy to hear it was just what you needed for your project!
Thank you for leaving a 5-star review on the Galvanized Duct Increaser/Reducer, Stan!
We appreciate the review on the Galvanized Duct Increaser/Reducer.
It is exactly how it looks in the image.
Thank you for sharing a review on the Galvanized Duct Increaser/Reducer.