Hello! For model WED5720RR, per the Owner's Manual, Only a 4" (102 mm) heavy metal exhaust vent and clamps may be used. Please feel free to view the link to the Owner's Manual for additional information. https://s3.amazonaws.com/sm-backend-production-attachments/owners-manual-w11685596-revC.pdf Thank you for your inquiry about our Whirlpool® appliances.
13 hours ago
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WhirlpoolTeam