Excellent Compatibility: The speaker spacer ring bracket fit for Subaru Forester 2008-2018, fit for Subaru Impreza 2014-2020, fit for Subaru Outback 2003-2020, fit for Subaru WRX/STI 2008-2019, fit for Subaru Crosstrek 2011-2017, fit for Subaru Legacy 2003-2014, fit for Subaru Levorg 2016 Reliable Material: This front door speaker spacer ring made of high-quality plastic material, that can withstand high temperatures, is not easy to wear and tear, and is more stable and wear-resistant than wooden brackets. plastic hardness, and good stability, provide reliable protection for your speaker Protect Tone: The speaker adapter can protect your speakers, improve the sound quality performance of the audio system, enhance bass and audio clarity, and improve the sound quality and effect of the audio system Main Function: This design effectively mitigates resonance at the speaker installation point, enhancing the clarity of mid-range frequencies and achieving deeper lows for an enriched audio experience Easy to Install: Just install it directly, the adapter is already arranged and can be inserted into the original slot. It can be easily modified if necessary. Some silicone adhesive can be added to the door at the speaker opening, which can act as a buffer to absorb some of the vibration of the speaker after installation, making the installation more secure color: Black material: plastic Package Contents: 6x Front Door Speaker Adapter