8" Subwoofer Speaker Spacers Depth Extender Extending Rings - 3/4" thick - ID: 7 1/8" OD: 8 7/8" - 1 Pair - SSK8XK - Stackable - Perfect For Framing Fiberglass Enclosures

Great product, exactly what I need.

Great color, easy installation. The coating yellows quickly. I'm not sure if it's from the heat of the lights or the elements. Two of my four sets have failed in under 2 years. They are not expensive so I'll just spend the couple of pennies to replace them. As I started with, I like the color.

They’re flat, they have multiple pre-drilled fastener widths as you can see in the pic. Also, a blank area to drill your own holes. One masssssssssssive word of caution. If you’re either opening up the pre-drilled holes larger with a drill bit or making your own. Go very slow, especially closer to the edge. Very low grade material that is crumbly (which isn’t an issue for this purpose), it’ll blow out. So slowly increase the bit size from if you’re going larger than 1/8”

I installed them per the instructions. Didn’t over tighten. And dremeled it out so my subs would fit correctly. Once I started playing my subs it pushed my sub out of the spacer stripping it and causing a gap. And to top it all off it split in half only seconds after I installed it (as I said before I followed per instructions including super glue to help hold it in place) It’s not worth the money. Overpriced for what looks and feels like styrofoam

Works great very strong I'm pushing a 1200w rms in this tiny box in a jeep tj needs more space for sub

They are exactly what I was looking for

Bought 2 sizes of these spacers. The package was immdiately a lot lighter than I expected, and I discovered the rings are made of something like a dense plastic foam. Came with some ugly tool marks on their outside edge, so had to sand them for them to be cosmetically acceptable. Also came with some strange instructions, essentially saying they are prone to cracking (they will replace them for free though) and said I can make a hole in them with a screwdriver (wtf?). A bit strange, but they should work. Honestly for the price I was expecting solid ABS plastic or a polished product. These seem like something you would find in the middle of a production line. Meh...

I bought these spacers needing just over 1/2" additional space for my speakers. The ad says they are 3/4" in depth (thickness), however, they are truly only 1/4" thick. I thought I was simply mailed the wrong size, so I ordered a second pair. Exactly the same....