BBK-601 este o contraplaca, ce se monteaza pe usi de sticla fara rama. BBK-601 are o arie mare de aplicabilitate, fiind compatibil cu YB-100, YB-100+, YB-100+(LED), SL-166B+, YB-500A(LED), YB-500A(LED), SL-133, YB-500A(LED)24V, YB500B(LED), YB-700B(LED).