Fox Acoustics Dodge Ram Quad and Crew Cab Dual 12 Vented Sub Speaker Box 2002 To 2017 Fits 2002-2018 DODGE RAM Quad & Crew Cabs 1500, 2500 & 3500 High output Vented / Ported design with 1.55 cubic feet per sub @35hz for 2-12's Mounting depth is 7.25" with a 7" diameter magnet. Hole size is 11.125" and will acommodate subs upto 13" This sub box will accommodate large subs like the JL Audio 12w3, Alpine Type R 12, Sundown SA-12, Punch P3 12 THIS ITEM ONLY SHIPS TO THE LOWER 48 STATES! No PO or APO shipments. Customer must be available to sign for package. This sub box is shipped in two packages, The two lower pods must be screwed to the box by the installer. A set of 5/8" seat spacers are included and are required.