Tjernlund CBB and CBW Register Booster Fans

Tjernlund's Cyclone Register Boosters increase airflow to under-performing registers. This helps to improve comfort in rooms that are either too hot or too cold.
  • Fits in both a 3x10 and a 4x10 duct
  • Sturdy Steel Construction
  • Works for all seasons
  • Built-in, Discrete Sensor
  • Fan blades angled at 45 degrees
  • Plug in cord
  • Turns on and off automatically
  • Available in Brown or White
model description usually ships price QTY
CBW Tjernlund register booster fan. Power cord included. Painted WHITE. 1 Day. In-stock $70.00
CBB Tjernlund register booster fan. Power cord included. Painted BROWN. 1 Day. In-stock $70.00
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tjernlund cbw cyclone

tjernlund cbb cyclone

Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!
#1 Q:   How many Sones or DBs do these booster fans produce?
A:   Tjernlund does not publish sound data for these. Sorry.

       Asked on 2021-12-31 by DB
#2 Q:   How long is the cord
A:   That has a 6 foot cord.

       Asked on 2021-12-13 by Anthony
#3 Q:   Does this fit the side of the base board
A:   No, its meant only for floor registers. There are no holes for mounting in a vertical orientation.

       Asked on 2019-07-27 by Donald
#4 Q:   Is it possible to add a vaiable speed control to this unit?
A:   The motors in these are not speed controllable.

       Asked on 2017-01-25 by DJ
#5 Q:   What is the cfm of this unit? Out of all the register boosters that you carry, is this one the best in terms of cfm and efficient energy consumption?
A:   Those are 60 cfm per Tjernlund...All the register boosters are roughly the same, so you couldnt go really wrong with any of them.

       Asked on 2015-07-30 by Jeff
#6 Q:   Can this be used in ceiling vents?
A:   These are for floor use typically, but it could be adapted by drilling holes through it and attaching it that way.

       Asked on 2013-10-06 by Melanie
#7 Q:   is this product a single fan or double fan
A:   This has a single fan unit on board.

       Asked on 2013-07-01 by ralph
#8 Q:   There doesnt seem to be any controls on this item. How do you set it? Can this be purchased in any outlet? i.e. Lowes or Home Depot?
A:   It runs automatically with a temp sensor on board, just set it and forget it.

       Asked on 2013-06-29 by Guido

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Suncourt's Flush Fit Register Booster increases airflow to under performing registers improving comfort to rooms that are too hot or too cold. 5 fan speed settings.


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