This Package Includes the Following Items:
1 x 2002-2013 Chevy Avalanche Car Audio Custom Dual 12" Subwoofer Enclosure Sub Box
2 x Harmony Audio HA-R124 Car Stereo Rhythm Series 600 Watt Single 4 Ohm 12" Sub

2002-2013 Chevy Avalanche Car Audio Custom Dual 12" Subwoofer Enclosure Sub Box:
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"

Constructed with High Quality MDF
High Quality Spring Loaded Terminal Cups (Bare Wire 'up to 10GA')
High Quality Black Carpet
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 Car Stereo Rhythm Series 600 Watt Single 4 Ohm 12" Sub:
Specifications: 12" Rhythm Series Car Subwoofer
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"
Min Sealed Box Volume (Cubic Feet): 1.25
Max Sealed Box Volume (Cubic Feet): 3.52
Min Vented Box Volume (Cubic Feet): 1.65
Max Vented Box Volume (Cubic Feet): 2.3
Single 4 Ohm