Size: 2" x 4' x (Any Length Up To 40 Feet). Fire Rating: Class "A" ASTM E84 25/0/50. Colors: White, Black, Gray. Other colors available. Composition: Acoustical Fiberglass fill with. PVC covering. May be installed horizontally or vertically. Standard configuration includes one side perforated. NRC: 1.00. Cloudscape Banners and Baffles are an economical way to reduce echo in large areas such as gymnasiums, theaters, restaurants, health and fitness clubs, etc. Typically, reverberation times that range from 4 - 9 seconds can be reduced to 1/2 - 2 seconds. Speech intelligibility is greatly improved and electronic sound reinforcement systems can perform their functions correctly. The light-weight Banners and Baffles are designed to be easily suspended from ceilings.