This Package Includes the Following Items:
1 x Car Audio Single 12" Vented Subwoofer Stereo Sub Box Ported Enclosure 5/8" MDF
1 x Alpine R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer

Car Audio Single 12" Vented Subwoofer Stereo Sub Box Ported Enclosure 5/8" MDF:
Features:Single 12" Vented Sub Box
Mounting Depth: 15-1/4"
Air Space: 1.60 Cubic Feet
Vented Enclosure
Dimensions: Width 18-1/4" x Height 13-1/4" x Depth 16-1/4"

Vented Enclosure allows maximum output
Constructed with High Quality MDF
High Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')
High Quality Gray Carpet

Alpine R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer:
General Features:12" Dual 4 ohm Type-R Subwoofer
Power Handling:Peak: 2250 watts
RMS: 750 watts

Recommended power range: 300 - 750W RMS
CTA-2031 compliant power ratings
Parabolic pulp/kevlar cone
H.A.M.R. surround
Polypropylene, mica and talc dust cap
Reinforced cone neck and spider joint
Cast aluminum frame with integral shorting sleeve
8AWG push terminals with VC configuration jumpers
2.6" High excursion overhung voice coil
127 oz. Strontium ferrite segmented magnet
Top-mount depth: 6-3/8"
Cutout diameter: 10-7/8"
Frequency Response: 24 - 200Hz
Sensitivity: 84.3dB
Resonance Frequency (Fs): 27Hz