Each model comes with enough Auralex® acoustical foam to cover about 1/3 of the interior. Each sheet is 2′ x 4′ and 2″ thick and attaches to the interior with Velcro®. This allows the user to customize the interior acoustics to suit their needs.
The foam can easily be added to or removed from, the WhisperRoom for applications where a more “dead” or “live” environment is desired. The entire interior surface of each WhisperRoom™ ceiling component and the base of the door are covered with pre-attached acoustical foam wrapped with cloth.