Page 2 of 2 FirstFirst 12
Results 14 to 16 of 16
  1. #14
    Join Date
    Sep 2002
    Posts
    4,970
    Originally posted by dash
    12" round,10"X11",and 21"X6",all have the same airflow characteristics ,except velociy which will be less in the 10X11 and even less in the 21X6,assuming the same material.Check your ductolator,to verify.

    Well everytime I get a customer that wants to save ceiling height by making the ductwork 2 inches deep by 40 inches wide I tell him it just wont let the air flow right being its all surface area and the air wont flow right.



    THATS MY STORY AND IM STICKING TO IT......

  2. #15
    Join Date
    Oct 2001
    Location
    Waterford Michigan
    Posts
    2,668
    Originally posted by dec
    Originally posted by dash
    12" round,10"X11",and 21"X6",all have the same airflow characteristics ,except velociy which will be less in the 10X11 and even less in the 21X6,assuming the same material.Check your ductolator,to verify.

    Well everytime I get a customer that wants to save ceiling height by making the ductwork 2 inches deep by 40 inches wide I tell him it just wont let the air flow right being its all surface area and the air wont flow right.



    THATS MY STORY AND IM STICKING TO IT......
    Quote the cost of 2 X 40 and he'll change his mind real quick!

  3. #16
    Join Date
    Jan 2001
    Posts
    7,749
    For noise issues you should just size your duct correctly for the proper fpm as well as cfm.....

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event