Single Sub Box 1999-2006 GM SIERRA EXTENDED CAB

Note: This will also fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if you have the new or old body style. If unsure, please contact us.

Features:

• Fits 8, 10, or 12 inch subwoofers
• Fits under the rear seat
• May need to remove floor mats
• Subwoofer fires down
• MDF Construction
• Air Space = .7 cu ft for the 8 inch sub and 10 inch sub
• Air Space for the 12 inch sub = .9 cubic foot
• Mounting depth = 7 inches for the 8 inch and 10 inch subs
• Mounting Depth for the 12 inch sub = 6.75 inches
• Speaker terminal included
• Charcoal Grey Carpet
• Optional carpet colors available to match your interior for an extra charge

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.