![4Runner custom fiberglass subwoofer box. The carpeting isn't great but not terrible for my first try with fiberglass. : r/4Runner 4Runner custom fiberglass subwoofer box. The carpeting isn't great but not terrible for my first try with fiberglass. : r/4Runner](https://preview.redd.it/jjzcjx3cyso61.jpg?width=640&crop=smart&auto=webp&s=074d661ce77709e4d01bb349b59f79a528b9b3c4)
4Runner custom fiberglass subwoofer box. The carpeting isn't great but not terrible for my first try with fiberglass. : r/4Runner
![FPR shallow mount subwoofer in a custom fiberglass box with OEM matching carpet. | Personalização de carros, Som automotivo, Auto FPR shallow mount subwoofer in a custom fiberglass box with OEM matching carpet. | Personalização de carros, Som automotivo, Auto](https://i.pinimg.com/originals/0a/e8/ff/0ae8ff8652a3579c05f187e60de1b4bf.jpg)
FPR shallow mount subwoofer in a custom fiberglass box with OEM matching carpet. | Personalização de carros, Som automotivo, Auto
![How to Build a CUSTOM FIBERGLASS SUBWOOFER BOX INFINITI Q | BUILT FOR TRUNK CORNER | SHORT - YouTube How to Build a CUSTOM FIBERGLASS SUBWOOFER BOX INFINITI Q | BUILT FOR TRUNK CORNER | SHORT - YouTube](https://i.ytimg.com/vi/mfD8j1cPlDE/maxresdefault.jpg)