This Package Includes the Following Items:
1 x 2014 - UP Chevy Silverado Crew Cab Truck Dual 12" Sub Box Subwoofer Enclosure
2 x Alpine S-W12D2 Car Audio Type S Series Sub Dual 2 Ohm 1200W Peak 12" Subwoofer

2014 - UP Chevy Silverado Crew Cab Truck Dual 12" Sub Box Subwoofer Enclosure:
Features:
2014 - UP Chevy Silverado Crew Cab Truck Custom Dual 12" Subwoofer Enclosure Sub BoxMounting Depth: 6-1/2"
Air Space: 0.74 Cubic Feet per Sub
Sealed Enclosure

Constructed with High Quality MDF
High Quality Twist Knob / Banana Plug Terminal Cup (Bare Wire 'up to 10GA')
High Quality Black Carpet
Overall Dimensions: 49-1/2" L X 16-1/2" W X 9-3/4" H
Enclosure installs under the rear seat, subs fire downward
This box fits:
2014 - UP Chevy Silverado Crew Cab Truck

Alpine S-W12D2 Car Audio Type S Series Sub Dual 2 Ohm 1200W Peak 12" Subwoofer:
General Features:12" 2 Ohm Type-S Series 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: 5-1/16"
Cutout diameter: 10-9"
Frequency Response: 26- 200Hz
Sensitivity: 86.2dB
Resonance Frequency (Fs): 31 Hz