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21 Cooker hoods from Miele Expertise in the field of ventilation technology Rangehoods from Miele External fans Fitting an external motor in the extraction system will help keep noise levels in the kitchen to a minimum. In this case, the fan is not installed in the hood, as usual, but on an outside wall, for example. For a significant reduction in noise levels, the ducting system should be at least 5-7 m long. Fan and rangehood are connected by a control lead. To implement this solution, Miele offers fan units for installation on an outside wall, inside masonry or in an attic. Silencers – for extra quietness Many Miele rangehoods have highly efficient sound proofing as standard which make them very quiet in operation. Should you wish to have an even quieter working environment, the Miele DASD 150 silencer is available as an optional accessory. It will reduce noise levels by up to 4.5 dB(A) re1pW. It even provides versatile options. It is suitable for use in vented as well as recirculation mode. Wall vent A wall vent kit can be installed in an outside wall so that the air can be vented to outside the building. Thermal bridges may occur in conventional wall vents, causing energy losses. For example, in winter cold air can enter the ducting. Miele wall vents feature a tight-sealing non-return baffle with a magnetic catch. A magnetic catch prevents cold or warm outside air from entering the building - this conserves energy. It also keeps out foreign objects such as leaves, debris, etc. The louvred grille of the wall vent is configured in a way that guides the air flow. This prevents loss of performance and the air flow is directed away from the outside wall. Roof vent If the extracted air is to be vented to atmosphere through the roof, a roof vent kit is required. Miele's kits are suitable for use with all roof pitches from 22° and all types of roof tiles. The high-quality stainless-steel housing is secured with weatherproof lead flashing. Flexible vent ducting Extraction ducting transports odours, moisture and heat outside the house to the atmosphere. The diameter and the materials used in vent ducting have a significant impact on air throughput. Smooth round ducting or special ducting with a rectangular cross-section where the diameter is not reduced, are most suitable. As a rule, Miele recommends a diameter of 150 mm.