10" Subwoofer Speaker Depth Extender Extending Ring - 1/2" Thick - ID: 9 1/8" OD: 10 7/8" - SSK10QS - Stackable - Perfect for Framing Fiberglass Enclosures
Brand: MJM Car Speaker Adapters


Allows for extra depth spacing to install deeper speakers
PVC construction is tough as nails
Stack 2 or more spacers for more depth clearance