Features:Dual 12" 88-98 Chevy Extended Cab Sub BoxAir Space: 0.95 Cubic FeetMounting Depth: 5 1/2"Sealed EnclosureDimensions: Width 56-3/4" x Front Height 10" x Rear Height 6-1/4" x Depth 13-1/4"Constructed with High Quality MDF Seven Sprayed on layers for a long lasting, durable, water resistant enclosure (same technology as spray-on bed liner)Enclosure installs under rear seat down firingThis box fits:1988 - 1998 Chevy C/K Extended Cab1988 - 1998 GMC Sierra Extended Cab------- SUBWOOFERS NOT INCLUDED WE SHOW THEM SO YOU CAN SEE HOW THE BOX LOOKS WITH WOOFERS INSTALL----

Features:Dual 10" 88-98 Chevy Extended Cab Sub BoxAir Space: 0.95 Cubic FeetMounting Depth: 5 1/2"Sealed EnclosureDimensions: Width 56-3/4" x Front Height 10" x Rear Height 6-1/4" x Depth 13-1/4"Constructed with High Quality MDF Seven Sprayed on layers for a long lasting, durable, water resistant enclosure (same technology as spray-on bed liner)Enclosure installs under rear seat down firingThis box fits:1988 - 1998 Chevy C/K Extended Cab1988 - 1998 GMC Sierra Extended Cab------- SUBWOOFERS NOT INCLUDED WE SHOW THEM SO YOU CAN SEE HOW THE BOX LOOKS WITH WOOFERS INSTALL----