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Differences Between Butterfly Vents Part # 371800 and Part # PLR24-002  

Updated 02/27/2018 | Published 02/26/2018

Question:

whats the difference between the regular butterfly vent and the butterfly vents for polar roof ventilators besides pricing? do these vents rust?

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Expert Reply:

The only differences between the vents is that part # PLR24-004 comes with a rubber gasket and part # 371800 does not. The mounting holes are also positioned a little differently. They are both 7-1/4" in diameter and made of a polished aluminum. If you are concerned with rust then I highly recommend using the Butterfly Vent part # PLR24-002 which is made of stainless steel.

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Conner L

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