Down4sound PRO-FAB HD3 12 | 1 12 Sub Box | Single HD 12-Inch KERF Port Subwoofer Enclosure Box - Down4Sound Shop
SK1X12V | Single 12" Ported Universal Fit Subwoofer Box | Skar Audio
First Subwoofer box I ever built. $0 budget just using scraps around the shop. Boss told me not to build a box it's cheaper to buy a prefab, and I took that
LAB PreFab™ 1.00 ft^3 Sealed MDF Enclosure Box for Single 12" Round Car Subwoofer
Amazon.com: Tru Spec Vented Prefab Single 6.5" Subwoofer Enclosure for Sundown SA/DC M3 : Electronics
How to build a subwoofer box
Amazon.com: Car Audio Single 10" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure : Electronics
BLACK 10" DUAL COMPETITION PORTED SUB BOX
TRU SPEC Prefab Single 15" Subwoofer Enclosure Sub Box Vented High Output | eBay