【Quick-Recovery】Be different from other foam, our products are made of the fifth generation polyurethane. The Quick-Recovery feature makes them available to be used immediately without waiting 2-3 days for expansion.【1.5 Inches and High Density】The sound insulation effect of acoustic panels depends on theirs thickness and density. Our products are not only made of high-density fifth generation polyurethane materials, but also thickened from 1 inch to 1.5 inches in thickness. They can effectively remove echoes and delete standing waves and flutter.【Egg Foam Padding Design Is the Most Soundproof】The experiment proved that egg carton foam is the most effective soundproofing design. The NRC of WVOVW 5th-Gen eggshell foam is as high as 0.91. The foam egg crate is perfect for professional studios, video blogger,rehearsal rooms, concert halls, podcasting, school,home theaters, offices, pet kennels,etc..【Package】For environmentally friendly shipment, the package of the egg crate foam will be made vacuum sealed. But don't worry about that just separate the panels from interlocking status and let them sit in a well-ventilated place, they will quickly be what you want.【Professional Manufacturer and Customer Service】Each of WVOVW acoustic foam panels have undergone strict quality testing. Moreover, WVOVW provides 7*24 professional customer service to answer all your questions. As long as you are not satisfied, you can get a replacement or refund without any reason! Product Description Quantity 12 Pack 24 Pack 36 Pack 52 Pack 12 Pack 36 Pack Self Adhesive Size 1.5"X12"X12" 1.5"X12"X12" 1.5"X12"X12" 1.5"X12"X12" 1.5"X12"X12" 1.5"X12"X12" Manufacturer WVOVW WVOVW WVOVW WVOVW WVOVW WVOVW Upgradation Value 19.99 36.99 53.99 71.99 17.99 36.99