Auralex U-Boat Floor Floaters, 300 Pieces

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  • Auralex U-Boat Floor Floaters, 300 Pieces
  • Auralex U-Boat Floor Floaters, 300 Pieces


Made of a specially-formulated rubber compound, U-Boat Floor Floaters are our proprietary U-shaped channels used to support framing members and float (isolate and decouple) them from the surrounding structure. With the help of U-Boats, a floated room features greatly improved transmission loss (isolation) and low frequency definition (translated: a tight, floated room will always sound better!).

U-Boats are the industry’s most affordable floating solution and are much easier to use than those exorbitant “pucks” that have been used in the past.


  • Decouples Floor Beams From Supporting Structure
  • Reduces Structural Vibrations
  • New Formulation With Improved Isolation

How much weight will U-Boats support?

U-Boats have been placed under floors supporting quite a bit of weight. However, testing for compressive tolerances is expensive and to keep U-Boat costs down, we have never verified performance. We have discussed the properties of U-Boats with rubber experts and we have been assured that: ”The framing member will fail before the U-Boat will fail.” This is good enough for us!

What is the proper spacing for U-Boats?

This is a very common question.

Guidelines for U-Boat spacing is as follows:

When Joist Spacing is 24” o.c.*, U-Boat spacing should be 16” o.c. along the joist minimum and not to exceed 24” o.c.

When Joist Spacing is between 12”-16” o.c., U-Boat spacing should be 16” o.c. along the joist minimum and not to exceed 32” o.c.

Most (>99%) of applications will work fine with 16” o.c. spacing of U-Boats along the joist. Spacing further apart will improve low frequency isolation below 40 Hz. However, spacing should never exceed 32” o.c.

*o.c. refers to “on center” and represents measuring from the mid-point of a joist or U-Boat to the mid-point of an adjacent joist or U-Boat.

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Technical Details

Size: 2 1/8″ wide x 1 1/2″ high x 2″ long, Inner Dimension: 1 1/2″ wide, Each U-Boat weighs 66.5 grams
Thickness: sides=5/16″ and base=1/2″
Color: Black
Box Quantity: Available in lots of 50 or 300

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