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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.
Product Code | Product Description | Size | Pack Qty | Packaging Type |
---|---|---|---|---|
RA34 | Metal Increaser | 3" - 4" | 12 | Bulk |
RA43 | Metal Decreaser | 4" - 3" | 12 | Bulk |