SKU: 40484615884

LAB PreFab™ 4.00 ft^3 Ported MDF Enclosure Box for Dual 12" Round Car Subwoofers

Sale price$184.50 Regular price$205.00
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

LAB PreFab™ 4.00 ft^3 Ported MDF Enclosure Box for Dual 12" Round Car SubwoofersWhat kind of subwoofers does this fit? This enclosure is precision built for two (2) standard 12" round subwoofers. The cutout diameters are exactly 11. 125" (11 1 8"). Will it fit in my vehicle? Yes, it features a maximized internal airspace configuration while maintaining a heavy duty deep cabinet profile suited for SUVs, trucks, large trunks, and cargo areas. The exact external dimensions are 33" W x 16. 50" H x 21" D. How is the performance and


What kind of subwoofers does this fit?
This enclosure is precision-built for two (2) standard 12" round subwoofers. The cutout diameters are exactly 11.125" (11-1/8").

Will it fit in my vehicle?
Yes, it features a maximized internal airspace configuration while maintaining a heavy-duty deep cabinet profile suited for SUVs, trucks, large trunks, and cargo areas. The exact external dimensions are 33" W x 16.50" H x 21" D.

How is the performance and wiring?
Designed as a true high-end, custom-ported specification, this cabinet steps far out of the lane of generic boxes. It splits a generous 4.00 ft³ shared internal volume optimized with a high-velocity custom slot-port tuned to 32Hz. By matching proper volumetric requirements and optimized port dimensions, it delivers incredibly deep, aggressive, and highly efficient low-frequency extension tailored perfectly to high-performance round 12-inch subwoofers. It features upgraded 2" round nickel-plated binding posts for secure and reliable wiring connections.

   

PreFab™ Custom-Spec Series: The Off-The-Shelf Custom Enclosure

   

In the car audio community, off-the-shelf boxes usually mean thin panels, generic tuning, and choked output. We developed the LAB PreFab™ Custom-Spec series to completely rewrite that narrative. Proudly manufactured in the USA, this series delivers true custom-shop acoustic performance without the custom-shop price tag or wait times.

   

Each cabinet is precision-cut from solid high-grade MDF and engineered around a highly optimized, high-velocity custom slot-port design. Instead of generic calculation curves, these enclosures are built around real-world manufacturer specifications to ensure proper port area, maximum flow, and ideal airspace matching. It is the ultimate plug-and-play solution for audiophiles and daily bassheads who refuse to compromise on custom-level low-end extension.

        

The Custom-Spec Advantage:

   
           
  • True Custom Slot-Porting: Engineered with optimized port areas and precise tuning to replicate custom-shop low-end extension and power handling.
  •        
  • American Made Solid Build: Designed, cut, and assembled in the USA using high-grade CNC-cut MDF to ensure maximum acoustic efficiency.
  •        
  • Manufacturer-Spec Airspace: Built closer to specialized manufacturer parameters than any generic box on the market—ready to ship, ready to slam.
  •    

Technical Specifications:
  • Dual 12-inch vented round woofer enclosure
  • Compatible with two (2) standard 12" round subwoofers
  • Constructed of 0.63" CNC-cut high-grade MDF
  • Reinforced 1.25" MDF double-layered front baffle to prevent panel flex under extreme load
  • High-grade black automotive carpet finish
  • Upgraded 2" round nickel-plated binding posts
  • Made in California, U.S.A.

  • Enclosure volume: 4.00 ft^3 (before drivers' displacement)
  • Peak tuning frequency (Fb): 32Hz
  • Sub cutouts: 2x 11.125" (11-1/8") Round
  • Max mounting depth: 19.50"
  • Dimensions: 33"W x 16.50"H x 21"D

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40484615884

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Verified Purchase
Deena M
Omaha, US
★★★★★ 5
Good value
Color: Jelly Pink, Material Type: Paper, PU
This is a great jewelry box for travel or to just keep at home. Very stylish and holds more than it looks like it would.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
C
Verified Purchase
Chavely
Boise, US
★★★★★ 5
CUTE
Color: Cloud White, Material Type: Paper, PU
I absolutely love this jewelry organizer! The 2-layer design gives it plenty of space without being bulky, making it perfect for travel. I was able to neatly store my earrings, necklaces, rings, and bracelets without anything getting tangled. The interior is soft and protects my jewelry really well, and the compartments are thoughtfully designed to keep everything in place. The compact size fits easily in my suitcase or handbag, which is a huge plus. The cloud white color looks elegant and makes it feel like a great gift option too. Overall, it’s practical, stylish, and very convenient for keeping jewelry organized on the go. Highly
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Reviewed in the United States on April 20, 2026
L
Verified Purchase
Lisa T.
Dallas, US
★★★★★ 5
I bought myself one and this one was gift for a friend.
Color: Cloud White, Material Type: Paper, PU
Very classy travel jewelry box. Just the size. Made well.
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Reviewed in the United States on May 19, 2026
V
Verified Purchase
VICKI CARROLL
New York, US
★★★★★ 4
Nice Jewelry Box
Color: Jelly Pink, Material Type: Paper, PU, Color: Jelly Pink, Material Type: Paper, PU
Really nice jewelry box just smaller than expected. My fault for not checking the dimensions first. It’s a great value for the price.
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Reviewed in the United States on May 11, 2026
C
Verified Purchase
Coco
Lowell, US
★★★★★ 5
Nice little jewelry box
Color: Cloud White, Material Type: Paper, PU
Just what I wanted in size and available compartments. The only thing I am hesitant about is the paper outside. Mine is white and may get dirty quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026

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