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Ford Crew Flat Pack Ported Subwoofer Box (4) Sundown Audio X 8s
Perfect fit for 2009-2025 Ford F150 and 2017-2025 F250-F350 Crew with 2.5" Seat Lift Installed 
What is a Flat Pack Subwoofer Box?
A flat pack subwoofer box is a precision‑cut subwoofer box kit that arrives as a set of cut panels you assemble yourself. Instead of buying a fully built box—or cutting raw wood from scratch—you get a perfectly measured, ready‑to‑glue kit that guarantees accuracy, performance, and a smooth building experience.
Dimensions-
11" Front Height x 8" Rear Height x 54" Wide x 15" Depth 
Specifications- 
Gross Volume- 3.02cuft
Port Area- 25.12sqin
Port Area Per Foot- 9.37sqin
Net Volume- 2.68cuft
Tuning- 33HZ via (2) 4" x 18"L PVC Port
Subwoofer Cutout- 7.3750"
Comes with-
All need parts
(2) 4" PVC port tuned to 33Hz
Speaker Terminal
 
Compatible Vehicles:
Ford F‑150 Crew Cab(2009–2025)
Ford F‑250/F‑350 Crew Cab (2017–2025)
Requires 2.5" seat lift
 
Assemble Easily! Just use some wood glue, and 1 1/4" Wood Screws in the included pre-drilled holes. DIY friendly. Quick Assembly !
 
*May work for other woofers*Subwoofer cut out is 7.3750" to fit the Sundown Audio X 8s