B Box Series Dual 10" Down-fire Enclosure For Gm(r) Heavy-duty Crew Cabs 2000 & Fits 2000 & up GM(R) Heavy Duty Crew Cabs MDF construction Completely carpeted enclosure with rounded edges .75" speaker baffles Custom built for under seat application Screwed down terminal cups Completely glued & braced 10" dual down-fire
B Box Series Subwoofer Boxes For Gm(r) Vehicles (10" Dual Down-fire) Fits 1999 & up GM(R) Extended Cab (ultra deep) MDF construction Completely carpeted enclosure with rounded edges .75" speaker baffles Custom built for under seat application Screwed down terminal cups Completely glued & braced 10" dual down-fire