1.00 ft @ 34.33Hz Ported Enclosure Box for JL Audio 8" W7 (8W7 AE) Sub Woofer - Walmart.com
LAB SlapBox+™ x JL Audio 8-Inch "Active" Subwoofer System with Built-In Amplifier in Ported Enclosure Optimized vented box with integrated class D amp & 8" JL Audio W3v3 subwoofer
Stage 2 Ported Enclosure for Single JL Audio 13W1V2-8 – Sonix Enclosures