![Amazon.com: uxcell 50mm x 122mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 1pcs : Electronics Amazon.com: uxcell 50mm x 122mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 1pcs : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/51WVrWKM+ZL._AC_UF894,1000_QL80_.jpg)
Amazon.com: uxcell 50mm x 122mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 1pcs : Electronics
![Amazon.com: uxcell 26mm x 95mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 4pcs : Electronics Amazon.com: uxcell 26mm x 95mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 4pcs : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/51EiRTJPrdL._AC_UF894,1000_QL80_.jpg)
Amazon.com: uxcell 26mm x 95mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box 4pcs : Electronics
![1 Set Speaker Port Tubes Subwoofer Bass for Reflex Tube Bass Woofer Vent Box Loudspeaker Port Vent Black 99mm 160mm - AliExpress 1 Set Speaker Port Tubes Subwoofer Bass for Reflex Tube Bass Woofer Vent Box Loudspeaker Port Vent Black 99mm 160mm - AliExpress](https://ae01.alicdn.com/kf/S1378d266afc641d5b561308a977a2dd82.jpg_640x640Q90.jpg_.webp)
1 Set Speaker Port Tubes Subwoofer Bass for Reflex Tube Bass Woofer Vent Box Loudspeaker Port Vent Black 99mm 160mm - AliExpress
![Amazon.com: uxcell 2Pcs 100mm x 160mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Port Tube Vent : Electronics Amazon.com: uxcell 2Pcs 100mm x 160mm Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Port Tube Vent : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/51-RfnkmO5L.jpg)