Amazon.com: Q Power QBASS Dual Vented 12 Inch Heavy Duty MDF Material Single Car Audio Subwoofer Enclosure Box with 2 Vents for Heat Management, Charcoal (2 Pack) : Everything Else
Custom Ported Sub Box Enclosure for 1 12" Sundown X-12 Subwoofer - 32 Hz 2.6 CF | eBay
6-12'' Sealed Poly Sub Box | Rhino Bass Box
Car Audio 6/6.5 Inch Empty Box Modified Car Subwoofer Speaker Mdf Felt Shell New Junction Box With Double Sink Holes - Subwoofers - AliExpress
Amazon.com: Custom Ported/Vented Sub Box Subwoofer Enclosure for a 15" Memphis MOJO MOJO6 Subwoofer - 4.0 CF - 35HZ - Big 6" AEROPORT : Electronics
Ported Sub Box Enclosure for 2 12" Subwoofers ~Plexiglass~ 6" AEROPORT ~ 4.7CF | eBay