Funny: 21.50lbs of Racked Ribs. After installing the RR2150 into you Home Theater Audience its guarenteed to improve sound performance by rounding out those flat edges of the belly. This will help reduce standing wave/freqency mode effects "flatline" you room response. These ribs are so tender they should be Outlawed. Available now at your local audio speciality and grocery store. Just look for the green button.