Ground Shaker GS-RF350TW3212B Dual 12" Sealed TW3 Sub Box — Fits 08–16 Ford F-350 Crew Cab
Enclosure only — subwoofers not included.
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Ground Shaker GS-RF350TW3212B Dual 12" Sealed TW3 Sub Box — Fits 08–16 Ford F-350 Crew Cab
Product Overview
Description
If you drive a 08–16 Ford F-350 Crew Cab, this Ground Shaker dual 12" sealed enclosure was shaped for it: it sits behind the rear seat and fires forward. A sealed design keeps the bass controlled and musical, and it puts two 12" subs where the factory left dead space. Each woofer gets its own chamber, which keeps them from fighting each other.
Key Features
- Vehicle-specific enclosure for the 08–16 Ford F-350 Crew Cab — mounts behind the rear seat, forward-firing
- Dual sealed chambers: 0.70 ft³ per subwoofer, 1.40 ft³ total air volume
- Cutouts sized for TW3 subwoofers only
- Built from ⅝" high-quality MDF, carpeted with durable trunk-liner finish
- Sealed with high-quality Titebond silicone and glued with Titebond wood glue
- 2 binding post terminals
- Installation requires removal of the jack kit; power window motor must be removed during installation
Specifications
| SKU | GS-RF350TW3212B |
| Application | 08–16 Ford F-350 Crew Cab — behind rear seat |
| Woofer Size | Dual 12" |
| Cutout Diameter | 11⅝" |
| Air Volume | 1.40 ft³ total; 0.70 ft³ per subwoofer |
| Chambers | 2 individual chambers |
| Subwoofer Compatibility | TW3 subwoofers only |
| Mounting Depth | 5" |
| Enclosure Type | Sealed |
| Firing Direction | Forward |
| Height | 16⅝" |
| Length | 58" |
| Top Depth | 3" |
| Bottom Depth | 6½" |
| Construction | ⅝" high-quality MDF, carpeted trunk-liner finish, Titebond silicone seal, Titebond wood glue |
| Terminals | 2 binding post terminals |
| Weight | 48 lbs |
| Color | Black |
Subwoofers not included. Price is each.
Free shipping on orders $150+
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
RMS vs. MAX power — which number do I actually care about?
RMS is what your gear handles continuously; MAX is the short burst it can survive without complaint. Match your amplifier's RMS output to your speakers' RMS rating — sizing off the MAX number is how magic smoke gets released.
What does the IP65 rating on DS18 marine gear actually mean?
It's dust-tight and rated against low-pressure water jets from any direction — built for spray, rain, and the occasional wave over the bow, not for full submersion. If something's going somewhere it could sit underwater, that's a different conversation entirely.
How do I match an amplifier to my speakers without guessing?
Add up the RMS rating of everything the amp will power, and pick an amp whose RMS output (at your speakers' impedance — usually 4-ohm) lands close to that total. Undersized is thin sound; wildly oversized is a fast way to blow a voice coil.
Can I mix marine-grade gear into a standard car audio setup, or the reverse?
You can run marine-grade gear in a car — it's just over-built for that environment, no downside besides cost. Running non-weatherproof car audio gear in an open UTV or boat is the direction that causes problems.
What gauge wiring kit do I need?
It scales with your amp's power draw and the length of the run — DS18's OFC kits come in 4-gauge and 8-gauge for a reason. Undersized wiring on a high-draw system is a voltage-drop and heat problem waiting to happen; when in doubt, size up.