Hi, this says air “intake” attenuator, I have No issue with the air intake but I am trying to silence the air on the supply side vents, does it work on the 90mm air supply side? Will it make any difference? I have 2 heaters on a boat. Thanks Ashley

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This question is related to Webasto or Eberspacher Air Intake Ducting Silencer 90mm 320mm | 9026691A | 1320996A.

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Answered by Butler Technik's Michael Burgess

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Accepted Answer

This product is designed to decrease the noise on the cold air intake side of the heater and is suitable for 90mm ducting. It should only ever be attached to the cold air intake side of the heater, never on the warm air outlet side.