Series 2100: Acoustical Partitions If reducing noise is as important as adding good looks to a space, and economy's a factor too, here's the door most people turn to. Woodfold's Series 2100 single-wall acoustic partitions are ideally suited to spaces where, in addition to closing off part of a room, some degree of sound reduction* is desired. In restaurants, churches, offices, assisted living facilities, almost anywhere, this durable accordion door serves to reconfigure a space at a moment's notice, minimize distracting noise, and also, thanks to full-perimeter seal system, lessen heat loss and air exchange between rooms.