Our Products Speaker system accessories Bass Reflex Tube Bass Reflex Tube Please Click products below, and click Add to Inquiry List for inquiry. Total of 9 results BR-4 Dia: 110mm(Inner)Length: 160mm~280mm adjustable Inquiry Info. BR-5 Dia: 66mm (Inner)Length: 160mm~245mm adjustable Inquiry Info. BR-6 Dia: 50mm(Inner)Length: 150mm~280mm adjustable Inquiry Info. BR-7 Dia: 35mm(Inner)Length: 110mm~200mm Inquiry Info. BR-12 Dia: 68mm (Inner)Length: 115mm Inquiry Info. BR-CO2 Dia: 50-60mm(Inner)Length: 120mm Inquiry Info. BR-C12 Dia: 102mm-106mm (Inner)Length: 102mm Inquiry Info. BR-C17 Dia: 46-50mm (Inner)Length: 130mm Inquiry Info. BR-C18 Dia: 70-76mm (Inner)Length: 155mm Inquiry Info. Total of 9 results Add to Inquiry List Review Inquiry List Back