I work here writing my paper lya This cardboard shame shed muffles internal sounds by 30 decibels if you’re listening from outside, which means you could drive a truck or operate a milling machine in there without much external noise. But it’s way too small for either of those things, because it measures 5.4 feet tall, 3.6 feet deep, and 2.6 feet wide. You should just stick to yelling, playing sick guitar solos, and blending daiquiris non-stop.