Sundown Audio U Series Aluminum Large Vent Spacer Ring | Official Sundown Spacer

The Sundown Audio U Series Aluminum Large Vent Spacer Ring is a precision-engineered part designed to increase airflow and improve cooling for your Sundown U Series and SA Series subwoofers. Built from CNC-machined aluminum, this spacer provides the clearance needed for proper venting, ensuring your subs deliver consistent, hard-hitting bass even under extreme power.

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Key Features:

Official Sundown Part – Genuine Sundown Audio spacer ring built for accuracy and reliability.
Perfect Compatibility – Works with the following Sundown subwoofers:

• SAv2 (18")

• SAv3 (15" & 18")

• Uv1 (18")

• Uv2 (15" & 18")

• Sized for 15" & 18" Models – Designed specifically for large-frame Sundown subs.
  For Other Sizes – If you have the same series listed above but in a different size (10"–12" / Uv1 and SAv2 15), you will need the Sundown Audio U Series Aluminum Small Vent Spacer Ring.
  Durable CNC Aluminum – Strong, lightweight, and designed for long-lasting reliability.
  Improves Cooling & Airflow – Increases ventilation around the motor and coil, reducing heat buildup.
  Hardware Not Included – Mounting bolts must be purchased separately.

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Product Details:

• Quantity: 1x Sundown Audio U Series Aluminum Large Vent Spacer Ring

• Compatibility: SAv2 (18"), SAv3 (15"/18"), Uv1 (18"), Uv2 (15"/18")

• Material: CNC-machined aluminum

• Function: Enhances airflow and cooling for high-performance subwoofers

• Hardware: Not included

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Why Choose the Sundown U Series Large Vent Spacer Ring?

Sundown’s U Series and SA Series subwoofers are built for serious bass, but heat management is critical to long-term performance. The U Series Aluminum Large Vent Spacer Ring provides the airflow your 15" and 18" subs need to stay cool and reliable during daily driving or SPL competition.

For smaller sizes in the same series, use the Small Vent Spacer Ring to ensure proper fitment and airflow.