Ali Express
1PCS Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Port Tube Vent 35mm/37mm/40mm/45mm/50mm/60mm Opening Hole
1PCS Speaker Port Tube Subwoofer Bass Reflex Tube Bass Woofer Box Port Tube Vent 35mm/37mm/40mm/45mm/50mm/60mm Opening Hole
3,37