system air Ce 2797 CPR 597958 Declaration of Performance No.: 1. Unique identification code of the product-type MRH 400...1250 of the construction product 2. Type, batch or serial number or any other element allowing identification MRH Size-Polarity-Nominal motor power-Temperature classification 3. Intended use of the construction product Powered smoke and heat exhaust ventilator for use in the construction product construction works 4. Name and contact address of the manufacturer System air d.0.0.