Seller notes

SSK18XK 18" Subwoofer Speaker Spacers Depth Extender Extending Rings - 3/4" thick - ID: 17 1/8" OD: 18 7/8" - 1 Pair - SSK18XK - Stackable - Perfect For Framing Fiberglass Enclosures Our speaker spacers are made to the highest quality standards, right here in the USA. They are made from CNC machined PVC plastic, and will not rot like MDF (medium density fiberboard) or wood. Our speaker adapters are tough as nails. Whether replacing worn speakers or simply upgrading, our speaker adapters will all...

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