This Package Includes the Following Items:
1 x Chevy Avalanche 2002-2013 Custom Fit Sub Box Enclosure Dual 10"
2 x Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm Subwoofer
1 x Harmony Audio HA-A800.1 Class D Mono 1600W Sub Amp
1 x Harmony Audio HA-AK4 Car 4 Gauge Amp - Nickel
Chevy Avalanche 2002-2013 Custom Fit Sub Box Enclosure Dual 10":
Features:Dual 10" 2002-2013 Chevy Avalanche Sub Box
Air Space: 0.70 Cubic Feet Per Sub
Mounting Depth: 4"
Sealed Enclosure
Dimensions: Width 50-1/2" x Height 20-1/2" x Top Depth 1" x Bottom Depth 6-1/2"

Enclosure installs behind rear seat in front of the midgate
This box fits:2002-2013 Chevy Avalanche
2002-2013 Cadillac Escalade EXT

Harmony Audio HA-F104 Car Stereo Flatline Series 10" Sub 700W Single 4 Ohm Subwoofer:
Specifications:
10" Flatline Series Car Subwoofer
Power Handling:
Peak: 700 watts
RMS: 350 watts
Sensitivity: 87.1dB
Frequency Response: 25Hz-1.5Hz
Single 4 Ohm

Harmony Audio HA-A800.1 Class D Mono 1600W Sub Amp:
Specifications:
Power Handling:
14.4V @ 1 Ohm
800 Watts RMS x 1
1600 Watts PEAK x 1
14.4V @ 2 Ohm
600 Watts RMS x 1
1200 Watts PEAK x 1
Frequency Response: 10Hz-180Hz
Features:
Includes Remote Bass Control Knob with Power Indicator LED
Includes HA-EASY Speaker Wire to RCA Adapter to Simplify Installation