Cadillac Escalade EXT Chevy Avalanche Midgate Replace 2 18" Sundown Audio ZV5 Subwoofer Box

Custom fit for all Cadillac Escalade EXT and Chevy Avalanches Will replace the Factory Midgate  Made for the Sundown Audio ZV.5 18" Sub Hole Cutout:  16.69" Overall Diameter: 18.42"  Airspace: 14 cuft /Volume Single chambered Can be made dual chambered NO SPEAKER TERMINALS or the holes unless specified Box completely sprayed with truckbed liner Ported and tuned to 32 hertz.  Port Area: 170 in2 Hole cutout, tuning, and airspace can be customized upon request Box can be built to a specific sub Have a custom design idea, we can build it Please like us on Facebook:  https://www.facebook.com/AK-Audio-533157110098448/ Subscribe to our Youtube channel:  https://www.youtube.com/watch?v=_4H7PCSz9ME https://www.youtube.com/watch?v=58AXxAbZxrY