Fits 2007-2013 Chevy Silverado Extended Cab and GMC Sierra Extended Cab trucks

• Fits single 8 inch, 10 inch, and 12 inch subwoofer
• Subwoofer fires down
• 5/8 inch MDF
• Air space = .6 cubic ft per sub
• Mounting depth for 8 inch sub = 6 inches
• Mounting depth for 10 inch sub = 6 inches
• Mounting depth for 12 inch sub = 5 5/8 inches
• Speaker Terminal included and hole cutout.  Terminal shipped uninstalled and located inside the sub box.
• Charcoal carpet
• Oem colors available for additional cost
• This is only for extended cab, not the crew cab

Hole cutouts:

• Standard hole cutout diameter for 8s = 7 inches
• Standard hole cutout diameter for 10s = 9 1/8
• Standard hole cutout diameter for 12s = 11 1/8
• If you don't know the actual hole cutout diameter, choose the standard cutout below.
• If we don't 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.

Popular subs customer use for this box:

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

Some subwoofers with large magnets may not fit. If any questions, please email or call us.

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 doesn't have a subwoofer at the time of purchase, then ask us for our recommendation as to which subs will fit.  
• We can't be held liable if a customer chooses a subwoofer larger than the specs provided for our sub box.