The only thing thin about the L7T thin subwoofer is the mounting depth. These tough subs work perfectly in nearly anything with a motor.
The L7T 12-inch Subwoofer is a true-bass, thin subwoofer with a pair of 2Ω voice coils.
Thin-mount and mean, the Solo-Baric® L7T square subwoofer delivers more bass than a round driver, giving you up to 20% more cone area than a round sub while fitting where only a thin driver will do. 
Features:
Uses a Sealed or Ported Enclosure
Square Sub Design Moves 20% More Air Than Round Subwoofers
Easily Mounts Under or Behind a Seat
Dual Voice Coil Design
Ribbed Santoprene Surround Resists Heat And Degrading
Bumped Top Plate For More Excursion & Smoother Performance
SoloKon™ Cone With 360-Degree Back Bracing
UniPlate™ Solid Pole Piece & Backplate For Excellent Heat Dissipation
Durable Steel Basket
Spec:
12 inch
2 ohm DVC
Power handling: 600W RMS
Frequency response: 25Hz 100Hz
Dimensions:
Mounting depth: 9.5cm
Sealed enclosure volume: 15.6L min - 35.4L max
Ported enclosure volume: 49.6L min - 63.7L max