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Double Ceiling Inlet

Better Air Mfg , I-CID-1501
QC Supply Part #: 10618
Shipping: Standard
Availability: In stock

Designed to operate under negative pressure systems. Housing color may vary from picture.


The 1,500 CFM Double Ceiling Inlet is designed to operate under negative pressure systems.


  • Constructed from polyethylene with Styrofoam baffles
  • 12" removable core plex insulation stop to prevent attic insulation from coming through the inlet
  • A counterweighted poly door operates automatically to provide air inlet for a negative pressure system
  • Easy to install
  • Foolproof operation


  • 1,500 CFM
  • Rough Opening: 21.5" L x 18" W
  • Weight: 11 lbs.
Manufacturer Part Number I-CID-1501



Manuals & Resources


Customer Reviews

  • 1 Stars


    Review by on Nov 14, 2015

    Takes a lot of negative air pressure to open. Installed as directions said. Adjusted counter weights and still do not open enough for the required air flow to match the exhaust fan CFMs will have to get a motorized one to correct problem.

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