- Hole cutout of 5.625"
- Outside diameter 9"
- Will allow you to install a 6.5" speaker in a 8" speaker hole
- Made with 3/4" MDF
- Can be used to extend speaker mounting depth on a box by 3/4"
- Other hole sizes available upon request
- Can be used for fiberglass projects
- This listing is for 1 piece
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- Have a custom design idea, we can build it