METAL INCREASER
| PRODUCT CODE | PRODUCT DESCRIPTION | SIZE |
|---|---|---|
| RA34 | METAL INCREASER | 3″ – 4″ |
| RA43 | METAL DECREASER | 4″ – 3″ |
Dundas Jafine’s Aluminum Increaser and Decreaser are used to connect 3” – 4” ducts together. They are offered with either a 3” crimped end for increasing the duct size to a 4” or a 4” crimped that will allow you to decrease the duct size to 3” in diameter.





