Ported/Vented Sub Boxes

SPL BOX DUAL 10 INCH PORTED SUB BOX 2.5 net cubic ft. Adjustable tuning frequency Custom hole diameter cut for your woofer 1.5" baffle LARGE spring loaded screw in terminal MDF furniture grade wood Carpeted in charcoal grey Speaker terminals included...

Air space = 1.7 cubic ft Tuned to 28hz We can adjust tuning; just request it in the comment section of order page or type your sub model # in the comment section. MDF wood Speaker terminals included but we dont ship the terminals installed.  We...

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...

1999-2006 CHEVROLET SILVERADO AND 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...

PORTED DUAL 8 BOX FOR 2007-2014 GMC SIERRA CREW TRUCKS *THIS WILL NOT FIT THE 2014 1500 (1/2 TON) CREW CAB* Ported box Fits dual 8 inch subwoofers Air Space = 1.5 cubic ft Mounting depth = 6 inches MDF wood Adjustable tuning (provide us with your sub...