PORTED DUAL 8 BOX - 1999-2006 GMC SIERRA EXTENDED CAB

1999-2006 GMC SIERRA EXTENDED CABS

• Vented box
• Fits dual 8 inch subwoofers
• Mounting depth = 7 inches
• Air Space = 1.7 cubic ft
• Tuned to 35hz
• MDF wood
• Charcoal carpet
• Available in OEM colors
• choose which side of rear seat you wish to place sub box.  Option available below.
• speaker terminal included.  Terminal shipped uninstalled due to risk of damage during shipping. It is individually wrapped and located inside the sub box.

NOTE: Boxes are carpeted in charcoal. OEM carpet colors available as option for additional cost.

NOTE: Make sure your subwoofer will work with the air space we listed. If not sure just ask us.

Popular subs customer use for this box:

• JL Audio TW3
• JL 8W1v3
• JL 8W0
• Alpine SWRT
• Kicker CVT CompRT Comp CompD and CompS
• Sundown E series

When you order this sub box please provide us with your sub model # if you have subs already. You can type the sub model # in the comment section of the order page. This ensures we cut the holes to match your subwoofers since several subs have different hole diameters.

Hole cutouts:

• Standard hole cutout diameter for 8s = 7 inches
• If you dont know the actual hole cutout diameter choose the standard cutout below.
• If we dont have your actual diameter listed below choose the standard cutout then provide us with your sub model #.  No worries we can look up the specs of your subs.

Our sub boxes are built by us! CNC precision cut and assembled by hand.

We guarantee our sub box will not fall apart.

Our competitors sell cheap pre-fab sub boxes that cant match or beat the strength and sound of our speaker boxes.

You will not be disappointed with our sub box.

NOTE:  

• Customers need to check their subwoofers specifications to see if they will fit the sub box.  Customers may contact us if they are not sure.
• Customers are responsible for providing us with their subwoofer model # at the time of purchase so we can ensure it will fit.  
• If customer doesnt have a subwoofer at the time of purchase then ask us for our recommendation as to which subs will fit.  
• We cant be held liable if a customer chooses a subwoofer larger than the specs provided for our sub box.