The Aerpro AP314 is a pair of 4 inch MDF speaker spacers, 16mm deep with a 106mm internal diameter and 140mm external diameter. They're built to give your 4 inch speakers the right depth and angle to fit properly in your car doors.
The Aerpro AP314 speaker spacers are purpose built for 4 inch speakers that need a bit more room or a better angle to clear door panels, window mechanisms, or other obstructions inside the door. Made from MDF (medium density fibreboard), a sturdy and stable material that resists warping, these spacers raise your speaker away from the factory mounting point. Each spacer measures 16mm deep, with a 106mm internal diameter to suit the speaker basket and a 140mm external diameter for the mounting ring. They arrive with mounting holes already drilled, so you don't need to measure and drill your own.
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