ASC Dodge Ram Extended, Quad or Club Cab Truck 1998-2001 Dual 10" Subwoofer Custom Fit Sub Box Speaker Enclosure - Armor Coated Dimensions: Width 46" x Front Height 10-1/2" x Rear Height 4-1/2" x Depth 18" Install Location: Under Rear Seat Install Notes: Removal of Jack kit and storage tray required Mounting Depth: 5-1/4 Inches Air Space: 0.57 Cubic Feet