This Package Includes the Following Items:
1 x Custom 10" 88-98 Chevy CK Extended Cab Subwoofer Box
1 x Harmony Audio HA-R104 Car Stereo Rhythm Series 500 Watt Single 4 Ohm 10" Sub

Custom 10" 88-98 Chevy CK Extended Cab Subwoofer Box:
Features:Single 10" 88-98 Chevy Extended Cab Sub Box
Air Space: 0.90 Cubic Feet
Mounting Depth: 6"
Sealed Enclosure
Dimensions: Width 23-3/4" x Front Height 10" x Rear Height 2" x Depth 13-1/4"

Constructed with High Quality MDF
High Quality Black Carpet
Enclosure installs on Driver side under rear seat down firing
This box fits:1988 - 1998 Chevy C/K Extended Cab
1988 - 1998 GMC Sierra Extended Cab

Harmony Audio HA-R104 Car Stereo Rhythm Series 500 Watt Single 4 Ohm 10" Sub:
Specifications: 10" Rhythm Series Car Subwoofer
Power Handling: Peak: 500 watts
RMS: 250 watts

Sensitivity: 86.1dB
Frequency Response: 30Hz-1.5kHz
Mounting Depth: 5 5/16"
Mounting Cutout Diameter: 9 1/4"
Min Sealed Box Volume (Cubic Feet): 1.0
Max Sealed Box Volume (Cubic Feet): 2.46
Min Vented Box Volume (Cubic Feet): 1.18
Max Vented Box Volume (Cubic Feet): 1.97
Single 4 Ohm