Universality: for 4" to 3.5 '' inch Speakers Tweeters For UTV ATV RV Boat Trunk Trailer Golf Cart Marine (needing open hole with hole saw according to the size of your speaker) ^^
Protection: The speaker box can prevent dust, water, etc. from entering the speakers and prevent damage to the speakers ^^
Material: made of high-quality PC plastic, shock resistence, UV-resistent ^^
Installation: Screws and nuts provided for installation on surface of your vehicle, the box allows most 4 to 3.5 inch speakers to be mounted, perfectly matching delivering an immersive audio experience around you ^^
Package: 2PCS of speaker boxes and mounting accessories