Bookshelf speaker wall brackets Conveniently mount your 301(R) Series IV or 201(R) Series IV Direct/Reflecting(R) speakers on a wall. Pair of brackets. Black. (Note: These brackets are not compatible with Series I, II or III speakers.) Model Name: WB-3 Wall Brackets. Pair of brackets. Available in black only. Use with: 301(R) Series IV Direct/Reflecting(R) speakers, 201(R) Series IV Direct/Reflecting(R) speakers