This Package Includes the Following Items:
1 x Fits Chevy Avalanche 01-13 Custom Dual 12" Sub Box Enclosure -Rhino Coated
2 x Harmony Audio HA-R124 Rhythm Series 12" - Package Sub
1 x Harmony Audio HA-A400.1 Class D Mono 800W Sub Amp
1 x Harmony Audio HA-AK4 Car 4 Gauge Amp - Nickel
Fits Chevy Avalanche 01-13 Custom Dual 12" Sub Box Enclosure -Rhino Coated:
Features:2002-2013 Chevy Avalanche Car Audio Custom Dual 12" Subwoofer EnclosureAir Space: 0.48 Cubic Feet per Sub
Mounting Depth: 4 1/2"
Sealed Enclosure
Dimensions: Width 48" x Height 6" x Depth 16-3/4"

Fits under rear seat, seat must be able to fold forward for box to fit
Subwoofers fire up towards the rear seat
This box fits: 2002-2013 Chevy Avalanche

Harmony Audio HA-R124 Rhythm Series 12" - Package Sub:
Specifications:
Power Handling:
Peak: 600 watts
RMS: 300 watts
Sensitivity: 88.2dB
Frequency Response: 27Hz-1.8kHz
Mounting Depth: 5 11/16"
Mounting Cutout Diameter: 11 1/8"
Single 4 Ohm

Harmony Audio HA-A400.1 Class D Mono 800W Sub Amp:
Specifications:
Power Handling:
14.4V @ 1 Ohm
400 Watts RMS x 1
800 Watts PEAK x 1
14.4V @ 2 Ohm
300 Watts RMS x 1
600 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