You guys are always really helpful for construction stuff so here it goes...
I'm building a subwoofer riser, and I need to add feet to it and i was gonna use this dense foam that the subwoofer ships with but realized i cant (since i need to keep the packaging for warranty purposes).
Any ideas where/what i could buy thats either like dense foam a few inches high or rubber blocks that i can place in the corners instead of wooden feet?
Pic of foam feet i need:
Links of products would be great if you can. Thanks y'all
Edit: holy crap, sorry about pic size, i thought it'd resize (it did on 2 diff forums).