Death Penalty-21 D1 Incriminator Audio 21" 1500W Dual 1-Ohm Death Penalty Series
One unit (not pair) |21 Inch Woofer for Bass Compensation of Open Baffle or Cabinet | W-21 – Lii Song (Lii Audio), unique speaker, amplfier, quality and cost-saving parts for HiFi DIY
18 Sound 21LW1400 21" Subwoofer 1400 watt speaker
Pair Rockville RS21B 21 inch Steel Bookshelf Speaker/Studio Monitor Stands - Black - Rockville Audio