16 Pack - Acoustic Foam Corner Blocks 3" x 3" x 24" Finish Corners in Studios or Home Theater

The quality control on size, color, and material is just plain horrible with these corner blocks. My project has me doing floor and ceiling runs in a 12'x18' room. Trying to piece these together in a longer run has been maddening and has added so much time for installation. Sometimes you'll get lucky and find some with the same color, but of course none of them match in size. There is a +/- variance of up to .25". That means the blocks will actually be anywhere from 2.75" or 3.25" on each face. Most of them are not even squares, but rectangles. They are an installation nightmare if you want any type of accuracy end to end.In the end they do what I need them to do, and in conjunction with the 12x12x2 wall tiles sold by the same company my new recording space is sounding fantastic.I would never buy these corner blocks again.

I wasn't sure wether or not this would be a quality product or not due to the price. I was pleasantly surprised to see that it was just as dense as the name brand studio foam I have. A couple of pointers when installing: double sided tape doesn't stick very well to it and some of the cuts vary slightly in width. So comparing the pieces before hanging them is a good idea. All in all, though, this is a great product.

These serve their purpose very well. If you use some 3m spray contact cement, you can bond multiples together and make your own wedges or whatever with a razor. I made corner trap baffles with these and they substantially calmed my room's metallic sounding slap down.

they work ok. i cut them into thirds and made bass trap blocks

The blocks are not all the same color, so they kind of clash when placed together. They come in 3 different shades of grey.

Used these as DIY bass traps, worked just like I thought they would, wish these were on Amazon prime! Didn't take too long to receive them though

Can't beat the price. Plenty of foam in the pack to do the corners in my medium size studio. Great value.

Terrible, took a month to get product and they don't help with bass frequencies at all. If need a bass trap build panels and don't waste your time with this foam crap.