Lithe Premium Speaker Fire & Acoustic Hood model 270 These fire and acoustic speaker hoods offer air-tight protection to comply with latest IEE and Building Regulations for Fire and Acoustic integrity of ceilings. Designed to house our ceiling speaker units, these hoods comprise a double-skin of intumescent fabric to provide the perfect fire safety solution. Easy to fit and designed to blend in with your ceiling, these products are a must-have to maintaining the fire rating of your home or business.