WhisperRoom Inc. manufactures portable/modular Sound Isolation Enclosures (vocal booths, voice-over room, broacast booth). WhisperRooms are perfect for recording, broadcasting, practicing, etc. in permanent or temporary locations. Nineteen sizes and two levels of isolation are available for immediate shipment. Sizes range from 2.5' x 3.5' to 8.5' x 15.5'. Standard features include: door window, ventilation system(s), cable passages and acoustical foam. Optional features include: wall window, caster plate, ventilation silencing system, soundwave deflection system, exterior accent package, height extension, exterior fan silencer, and isloation enhancement package.