Amazon.com: Cerwin Vega VPS102D Shallow Mount 10 inch subwoofer with Max 600 watts Power Handling and 300 watts RMS, Slim Subwoofer for Car, Lightweight, Black, Single Unit : Electronics
Mb Quart Ds1-204 8 Inch 400 Watt Max 200 Watt Rms 4 Ohm Dual Voice Coil, Shallow Slim Subwoofer For Car Audio Sound System, Single Speaker : Target
Carwales Car Active Powered Woofer System Amplified Subwoofer 8 Inch Car Audio Sub Woofers Car Slim Flat Subwoofers Under Seat - Subwoofers - AliExpress
JL Audio 13TW5v2-4 Shallow-mount 13.5" 4-ohm subwoofer at Crutchfield
DS18 SQBASS8 8" Amplified Under Seat Car Subwoofer 600 Watts.
Shallow Series Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
DS18 12" 1600 Watts Single 4 Ohm Shallow Subwoofer Pro Car Audio IXS12.4S - Walmart.com