I'm not even going mention their 'preferred' independent contractor, EDDIE MORENO, STOLE OUR DEPOSIT, BUT HE DID AND IS A THIEF. I'm here to say SoundProof Windows not only don't work, they amplify certain sounds like muscle cars and truck engines. I bought an entire houseful of these windows to hopefully NOT hear my next door neighbors' two barking dogs. After spending $10K, I have learned they don't block those barking dogs, either.