This Package Includes the Following Items:
1 x Custom Dual 10" 99-06 Chevy Silverado Extended Cab Sub Woofer Box
2 x Alpine S-W10D2 Car Audio Type S Series Sub Dual 2 Ohm 1200W Peak 10" Subwoofer

Custom Dual 10" 99-06 Chevy Silverado Extended Cab Sub Woofer Box:
Features:Dual 10" Chevy 99-06 Extended Cab Sub Box
Air Space: 0.95 Cubic Feet
Mounting Depth: 5-3/4"
Sealed Enclosure
Dimensions: Width 51" x Front Height 9-3/4" x Rear Height 7-1/4" x Depth 13-1/2"

Constructed with High Quality MDF
(2) High Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')
High Quality Black Carpet
Enclosure installs under rear seat downfiring
This box fits:1999 - 2006 Chevy Silverado Extended Cab 1500, 2500, & 3500
1999 - 2006 GMC Sierra Extended Cab 1500, 2500, & 3500

Alpine S-W10D2 Car Audio Type S Series Sub Dual 2 Ohm 1200W Peak 10" Subwoofer:
General Features:10" 2 ohm S-Series (Type-S) Subwoofer
Power Handling:
Peak: 1800 watts
RMS: 600 watts
Recommended power range: 250- 600W RMS
Pulp/Kevlar Cone
High Amplitude Multi-Roll (HAMR) Surround
Progressive Spider with Reinforced Layer Tinsel Leads
Airflow Optimized Dual Flare Pole Vent
High Strength Steel Frame Basket
8 AWG Push Terminals with VC Configuration Jumpers
Dual Voice Coil
High Grade Strontium Ferrite Magnets
Top-mount depth: 4-11/16"
Cutout diameter: 8-13/16
Frequency Response: 26- 200Hz
Sensitivity: 86.4dB
Resonance Frequency (Fs): 33 Hz