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Whisper Line™ Installation Kit - 4" Double Pick Up

Whisper Line  Installation Kit - 4
Item #PC-NLF04D
AvailabilityUsually ships the same business day
Sale Price$157.50

This kit contains the following items:

2 - 4" inlet grilles
1 - Y-Adapter (4 x 4 x 4)
2 - Backdraft Damper (4")
12 - Zip ties

Question: Are the backdraft dampers spring loaded?
Answer: These are gravity dampers.
Whisper Line Installation Kit - 4" Double Pick Up

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