- Will fit ALL Avalanches and Escalade EXT
- Built for 12" JL AUDIO 12W7AE-3
- Box will not swing open like factory midgate (unless removing the glass)
- Airspace:1.75 cuft
- Tuning: 36.7 hertz
- Hole cutout: 10.5"
- Overall diameter: 12.5" (13" recess diameter)
- Front baffle will be made of 1" MDF : rest of box will be 3/4" Mdf
- Box sprayed with the rugged truckbed liner
- Box is glued and nailed